Thank you !
sorry can’t load forum yesterday
I try to convert UE54 to UE55 again in place, the bug still occured. Seems it’s a bug of UE55.
I find a dirty way to change the structure :
create a new project and copy the content folder then edit the structure before linkers generated. then paste back the new structure to original project.
I don’t know is it safe.
Is the LINKER in an uasset?