Cannot remove OpenUDID from project

[greenmood]

Hi all,
I have a project where OpenUDID was used. Then was decided to move from it to IDFV(identifier for vendor). Now there's a problem. Every time app starts there's a OpenUDID dictionary no matter what happens.
What i have already tried:

1. removing OpenUDID dictionary from user defaults and calling synchronize afterwards
2. going though cycle(1..100) to create name for uipasteboard. then set nil for pasteboard type that OpenUDId used. remove that pasteboard.
   but still, nothing helps. Every time app starts, that dictionary in user defaults get overridden with new values.
   Thank you for any help.

[greenmood]

I got it. The problem was with Testflight used in project. Testflight is using OpenUDID and it's not documented at all.