Hi Dematri,
Benoit has answered 3 of your 4 questions.
For the question (c): Is it possible to have a 2 way replication of objects in Dirsync?
Based on current situation, we cannot have any duplicate objects in DirSync at present.
If anything else is unclear, please feel free to post it back. We are here to help.
@ Benoit, thanks for your efforts!
Best Regards,
Allen Zhang