My understanding from postings on the 10 Micron forum that 10 Micron mounts can only auto-meridian flip when instructed by software prior to the meridian. The only way to handle this in SGP is to set a flip as a minus number and to wait for meridian. This setting works and is only a minor inconvenience in terms of lost potential subs.
Whether this is the 'ideal' functionality for its driver and firmware I am not sure.