The thing is the op and I as well have many of our unlocks available, but have one or several things missing. I got the POLYMAT camo in the first beta and now it's locked again. That's 1000 coins down the drain.
Edit: So everything except for the camo is still equipped but locked... This is a bizarre system.
Yes, this is a already known bug:
Character Customization: For any players that were present in any Alpha or previous Beta please delete your profile.sav in the below location: C:\Users\UserName\AppData\Local\Insurgency\Saved\SaveGames\Profile
As long as you do not change your customization, you can still keep it even it is locked, but you may get some visual bugs like invisible torsos etc
I have experienced this myself from alpha to beta1.
I backed up my profile.sav which has all my equipped cosmetics.
I don't know how other players see it, but I see myself in the main menu still decked out with everything I unlocked in the alpha and beta.
the file is located: