To reproduce:

1.Download and open attached project.
2.Go to Editor folder and remove "AndroidKeystoreData" ScriptableObject.
3.Re-import "AndroidKeystoreData.cs" script.
4.Notice the values that are outputted in the console.
5.Re-import "AndroidKeystoreData.cs" script again.
6.Notice that values taken from that same ScriptableObject are null.

Expected result: Scriptable object's values are shown in the console.
Actual result: Shown values are null.

Reproduced with: 5.6.0b7, 5.5.1p3, 5.4.4p2.

Notes: If You select "AndroidKeystoreData" ScriptableObject ,saved data is shown in the inspector, but it shown as null in the console when accessed trough script.

Verified with 2017.2.0b2