Anyone gets same issue after migrating ?
Guess i will need to reference it manually .
I had this same problem you forgot to grab all the sub components for everything. On the reference viewer you need to increase the depth you are viewing to make sure you get all sub and sub-sub etc. components.
I had this problem because I create the StarterContent project named Content, so UE didn`t find the correct Content folder, I just rename the folder to solve the problem (close and reopen UE4.22 after the changes):
D:\UnrealEngine\Content\StartContent
rename to
D:\UnrealEngine\00_StartContent_Assets\StartContent
Another way to solve this is migrate to BattleTank folder instead of Content folder:
D:\UnrealEngine\04_BattleTank\BattleTank\Content\StartContent\Content\StarterContent
and move manually the folder StarterContent to BattleTank\Content:
D:\UnrealEngine\04_BattleTank\BattleTank\Content\StarterContent
(close and reopen UE4.22 after the changes)