CPAPtalk.com

I don't have a years worth of data to confirm this, but I believe Sleepyhead can do what you are asking. I know with mine, I have 90+ days of data and see all of them.

Try re-importing the data...maybe it just didn't import correctly. I'm not familiar with the Mac version, so you are kinda on your own with that. We do have a member here who can help on the Mac side... his name is BreatheJimbo I believe.

Physician wrote: Suggest everyone BACK-UP or Image your data card on your PC or Mac before reinserting it in your CPAP machine.

Sorry to hear about your card. I've had that happen to me before. I suspect my PC corrupted the card and the S9 was just trying to reformat it somehow.
I always engage the card lock when i remove it from the S9 prior to inserting it into my PC, I've never had a problem since.

I'm under the impression that the machine stores 365 days worth of summary data which should get written to a new card?