When trying to set a private variable in a flow graph the graph brakes.

The following errors appear on the nodes.
{code:java}
You can't cancel if there is no cancellation callback registered
{code}
{code:java}
ThreadAbortException
Unity.Bolt.ExtractionWorkflow.Load (Unity.Bolt.IExtractor extractor) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Editor/Bolt.Core/Extraction/ExtractionWorkflow.cs:204)
Unity.Bolt.ExtractionWorkflow.EnsureStartedLoading[TExtractor] (System.Boolean compare) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Editor/Bolt.Core/Extraction/ExtractionWorkflow.cs:256)
Unity.Bolt.UnitOptionTree.Prewarm () (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Editor/Bolt.Flow/Options/UnitOptionTree.cs:59)
Unity.Bolt.FuzzyWindow+<>c__DisplayClass19_0.<Initialize>b__0 () (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Editor/Bolt.Core/Interface/Fuzzy/FuzzyWindow.cs:419)
Unity.Bolt.FuzzyWindow.RunTaskSynchronous (System.Action task) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Editor/Bolt.Core/Interface/Fuzzy/FuzzyWindow.cs:1410)
UnityEngine.Debug:LogException(Exception)
Unity.Bolt.FuzzyWindow:RunTaskSynchronous(Action) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Editor/Bolt.Core/Interface/Fuzzy/FuzzyWindow.cs:1415)
Unity.Bolt.FuzzyWindow:Work() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Editor/Bolt.Core/Interface/Fuzzy/FuzzyWindow.cs:1444)
System.Threading.ThreadHelper:ThreadStart()
{code}
{code:java}
Failed to add element to graph: SetFlowGraphVariable#afe09
System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
at System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) [0x0001e] in <fb001e01371b4adca20013e0ac763896>:0
at System.Collections.ObjectModel.ReadOnlyDictionary`2[TKey,TValue].get_Item (TKey key) [0x00000] in <fb001e01371b4adca20013e0ac763896>:0
at Unity.Bolt.XBoltClassGraph.TryGetClassReference (Unity.Bolt.IGraph graph, Unity.Bolt.GraphReference& reference) [0x00078] in /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/BTS/IBoltClassGraph.cs:124
at Unity.Bolt.Unit`1[TFlowGraph].Define () [0x00067] in /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Flow/Units/Unit.cs:216
at Unity.Bolt.Unit`1[TFlowGraph].AfterAdd (TFlowGraph graph) [0x00000] in /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Flow/Units/Unit.cs:97
at Unity.Bolt.FlowGraphVariableUnit.AfterAdd (Unity.Bolt.FlowGraph graph) [0x00000] in /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Flow/Units/BTS/FlowGraphVariableUnit.cs:46
at Unity.Bolt.GraphElement`1[TGraph].Unity.Bolt.INotifiedCollectionChild<Unity.Bolt.IGraph>.AfterAdd (Unity.Bolt.IGraph graph) [0x00000] in /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Graphs/GraphElement.cs:48
at Unity.Bolt.ParentCollection`3[TParent,TKey,TItem].AfterAdd (TItem item) [0x0000f] in /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Collections/ParentCollection.cs:308
at Unity.Bolt.ParentCollection`3[TParent,TKey,TItem].InsertItem (System.Int32 index, TItem item) [0x00016] in /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Collections/ParentCollection.cs:97
at System.Collections.ObjectModel.Collection`1[T].Add (T item) [0x00020] in <fb001e01371b4adca20013e0ac763896>:0
at Unity.Bolt.VariantCollection`2[TBase,TImplementation].Add (TBase item) [0x00013] in /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Collections/VariantCollection.cs:42
at Unity.Bolt.MergedKeyedCollection`2[TKey,TItem].Add (TItem item) [0x00000] in /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Collections/MergedKeyedCollection.cs:168
at Unity.Bolt.GraphElementMergedCollection.Add (System.Collections.Generic.IEnumerable`1[T] elements) [0x0004d] in /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Graphs/GraphElementMergedCollection.cs:33
UnityEngine.Debug:LogWarning(Object)
Unity.Bolt.GraphElementMergedCollection:Add(IEnumerable`1) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Graphs/GraphElementMergedCollection.cs:37)
Unity.Bolt.Graph:OnAfterDependenciesDeserialized() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Graphs/Graph.cs:172)
Unity.Bolt.Serialization:CheckIfDependenciesMet(ISerializationDepender) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Serialization/Serialization.cs:906)
Unity.Bolt.Serialization:NotifyDependencyAvailable(ISerializationDependency) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Serialization/Serialization.cs:878)
Unity.Bolt.Serialization:NotifyDependencyDeserialized(ISerializationDependency) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Serialization/Serialization.cs:842)
Unity.Bolt.BoltType:OnAfterDeserialize() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/BTS/BoltType.cs:148)
Unity.Bolt.BoltClass:OnAfterDeserialize() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/BTS/BoltClass.cs:112)
Unity.Bolt.UnityAsset:Unity.Bolt.IUnityRootObject.OnAfterDeserialize() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Unity/UnityAsset.cs:47)
Unity.Bolt.Serialization:OnAfterDeserializeImplementation(UnityAsset, FullSerializationData, SerializationData, Boolean&) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Serialization/Serialization.cs:755)
Unity.Bolt.UnityAsset:UnityEngine.ISerializationCallbackReceiver.OnAfterDeserialize() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Unity/UnityAsset.cs:27)
{code}
{code:java}
Could not load connection between 'trigger' of 'Update#3cdda' and 'assign' of 'SetFlowGraphVariable#afe09'.
UnityEngine.Debug:LogWarning(Object, Object)
Unity.Bolt.UnitConnection`2:HandleDependencies() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Flow/Connections/UnitConnection.cs:190)
Unity.Bolt.GraphElementMergedCollection:Add(IEnumerable`1) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Graphs/GraphElementMergedCollection.cs:28)
Unity.Bolt.Graph:OnAfterDependenciesDeserialized() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Graphs/Graph.cs:172)
Unity.Bolt.Serialization:CheckIfDependenciesMet(ISerializationDepender) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Serialization/Serialization.cs:906)
Unity.Bolt.Serialization:NotifyDependencyAvailable(ISerializationDependency) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Serialization/Serialization.cs:878)
Unity.Bolt.Serialization:NotifyDependencyDeserialized(ISerializationDependency) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Serialization/Serialization.cs:842)
Unity.Bolt.BoltType:OnAfterDeserialize() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/BTS/BoltType.cs:148)
Unity.Bolt.BoltClass:OnAfterDeserialize() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/BTS/BoltClass.cs:112)
Unity.Bolt.UnityAsset:Unity.Bolt.IUnityRootObject.OnAfterDeserialize() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Unity/UnityAsset.cs:47)
Unity.Bolt.Serialization:OnAfterDeserializeImplementation(UnityAsset, FullSerializationData, SerializationData, Boolean&) (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Serialization/Serialization.cs:755)
Unity.Bolt.UnityAsset:UnityEngine.ISerializationCallbackReceiver.OnAfterDeserialize() (at /Users/johncrowe/WORKSPACE/GITPROJECTS/com.unity.bolt/Packages/com.unity.bolt/Runtime/Bolt.Core/Unity/UnityAsset.cs:27)
{code}
* Steps to reproduce
* Add a Bolt component to a game object
* Create a new flow graph on the game object
* Create a private variable in the flow graph
* Alt + Drag the private variable into the graph
* Attach it to the update function
* Play the scene
Notice issue >> Nodes brake, turn red, display errors.

This is a regression on 2.0.0a13

Video attached
Tested: Unity 2020.1.0f1, Bolt release/2.0.0.a14, macOS