I have imported quite a few stadiums on my game and most of them are appearing all right, but...
Few stadiums don't assign to certain teams. For example default stadium for RCD Espanyol is Waldstadion and after adding Cornella El Prat into my game I try to assign the stadium for the team in CM14's team generic page but after saving it always returns as Waldstadion.
Is there something I haven't noticed here or what's the catch?
Anyway, I did some seeking and trying and managed to cope this issue with DBMaster. Over there there is a "teamstadiumlinks" page where I was able to force the right stadium for the teams I had problems with. It worked out and I didn't even lose my manager season.