Is it normal that after cgminer restarted, the renter's pool isn't restored and I cant switch to it manually because it's gone?
How to prevent that?
Add 'save' command to group assigned to leaserig via API. See first message of this thread for details.
I have it done like this:
cgminer -c MYCONF.conf --api-groups P:switchpool:addpool:removepool:restart:save:* --api-listen --api-allow P:89.212.242.33 --api-port 7777
Is this okay? Cause the save group is added

Dont know if it matters but try:
--api-groups "P:switchpool:addpool:removepool:restart:save:*"
i dont think it likes multiple things in your command line, or just add it in your conf file.