Noteworthy is that your Audiologist will always know when someone has saved ANY settings to the hearing aids . Why? The match/mismatch comparison is not based on the actual settings. It is based on a comparison of the HA-DateTimestamp versus the database-DateTimestamp. When/if you return to your Audiologist, then your Audi will get the same settings mismatch warning. The warning will occur even if you revert back to the Original Professional Settings. There is no way around it except to never save settings to the HAs, which defeats the purpose of self fitting. Here’s a Discussion Link.