[Reforged] Compiling importing errors and the solutions to fix them

[Ardenaso]

In Reforged, some of us has experiences of models suddenly breaking when we import certain geosets of another unit or when we import certain animations to another unit. I don't have any solutions myself but I think it would be a good idea to pool the importing issues and the solutions here for future references.

Note: before reporting an error, make sure the problem still persists after resolving the red/critical errors in the Hive Sanity Test. This thread is reserved for "hidden errors" such as those that aren't detected by the said sanity checker

Errors:

1. Model breaks when importing geosets from Spellbreaker
2. Model breaks when importing geosets from Priest
3. Druid of the Claw model breaks when importing animation from Male Villager

Any reported error and solution will be greatly appreciated !