Couple of questions

I have a old wallet cold storage, saved the wallet.dat file. I can just import that/copy that file over to the new wallet version and be OK right? Or do I need to do something special? Havent touched that one in like 5-6 months.

With the latest wallet version it says Syncing Headers in bottom left corner than stays seemingly stuck at last received block, which was 5 days ago it says. One time I left it like this for a long while and it completed sync but IDK how long that took. Its abnormal to me cause the guncoin wallet would sync so fast usually leave it open and itd complete sync within 3-5 minutes (depending on how far its been since I opened it last)