Objects get de-attached from a garrison when it has been re-captured from the enemy

[Jasperdoit]

Data comes from #bug-reports-stable and some details might not add up, but I'll try to explain it to the best of my knowledge.

The user had captured Almyra firing range and placed a storage object there (Jeroen not's limited arsenal). Said garrison got captured by the enemy and after an unspecified timeframe, it got recaptured. Upon recapture, all objects were present, but the user reported having problems with recruiting A.I from the garrison as the equipment tab was blank. I advised the user to attach the storage object to the garrison. The use replied with the issue being fixed, however, I think this is still an issue that must have a way of being solved via code. The user in question who reported the issue is Tolph#3990. If you have questions regarding the issue, you should contact him.