System went down for several minutes due to a power outage and went it booted up all the programming changes I made on my last visit were undone.
the rest of the database was there and the system is running fine. I suspect a bad MP 40 card.
Is it possible that the system is booting from an older database from the SD card ?
has anyone every heard of this problem before ?
software is version 4.53b

Reason is you never backed up the database to the memory card
I learnt that lesson years ago

I have the daily save DB set to 1am in 2.1.5
how do you do this manually ?

Try 818 but make sure you put on the card

This issue is due to the way the OS7400 memory works.
If initiallised properly this doesn't happen

I will send a PM with what steps you need to take to stop it happening again.