Steps to Reproduce

1) create new project
2) Create Resources folder
3) Create Prefab - call it Base - in resources folder (Empty GameObject will do)
4) Create Prefab - call it Dummy - in resources folder (Empty GameObject will do)
5) Create Prefab Variant of Base in Resources folder
6) Double click Variant to edit it, make the Dummy prefab a child of the root inside the variant and save the variant
7) Open variant in text editor and find the Transform marked as "stripped" make a note of the fileid (the number just before the "stripped" keyword)
8) Back in the Editor build any standalone player
9) Double click Variant to edit it. Change the scale on the root or any other property, save the variant
10) Open the variant in a text editor find the Transform marked as "stripped" and notice the fileid is different from step (7)

Expected behavior: fileid of the stripped Transform does not changed
Actual behaviour: fileid of the stripped Transform changes