certain Limits don't save

3.1 bug where certain fields don't save when editing a client or reseller:

Email Limits > Mailservers (can select a server, but it doesn't save)

Database Limits > Database servers (same) Database Limits > Database quota (problem for resellers only, clients do save here)

DNS Server > DNS Server (can select a server, but doesn't save. also for resellers, it shows both ns1 and ns2, which shouldn't show as it is a mirror of ns1 - for clients it only shows ns1)

Max. number of Clients > Domainmodule Limit .. always resets to 0, but maybe that's correct behavior.

There could be others that eg. reset to default value and I just happen to be using the defaults, but that's what I've found so far.