Global InBox - InBox folders keep duplicating


I use 8 Devonthink Pro Office databases.

Everytime I look in the Global InBox the following folder keeps on duplicating
every time I restart Devonthink.

Inbox 1.

It will duplicate from 2 to 4 to 8 to 16 etc etc.

Even afetr I trash them they will start again.

I am a file control freak and do not like this behaviour.

Please help.

Kind regards.