Lost transactions after upgrading to 2.0b107

I lost most of my data (transactions/categories), when updated to 2.0b107. (passcode lock is turned on). So I see an old db of my transactions. It seems like, I went back in time.
At the first time, when I logged into the app after the update, the db was empty.
Second time, I got some transactions back.
Do you have any idea, how to get back my transactions?
Cha Ching is the best money tracker I've ever used.

Update #1
If I copy back the old db (placed under ~/Library/Application Support/Cha Ching 2.0/****~2ccdb, and upgrade it again, I get the same problem. But if I copy back the old db, and use 2.0b104, it works like a charm.

I think there is a problem with the db upgrade process.
 
sad I’m confused
Inappropriate?
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