Hi Bernie,
We got your email and sent the first info gathering steps, but I wanted to let everyone know the gist. If you get any data at all after the update migrates your data, everything available to 2.5 was migrated and it's just a question of figuring out why only some data is visible. It could be there's more than one Account and an older one is selected, or a trip of the finger in QuickFilter, or a Smart Folder is selected, or multiple versions of CheckBook Pro were in use before the update. That last one is fun. There's the possibility that you could've used a recent version of CheckBook until the middle of 2011, then used a slightly older version that was just old enough to store its Accounts in one of the places we used to use, so older data was in the most recent place we've used (~/Library/Application Support/Splasm Software, Inc.) and that older data was picked up by 2.5. It sounds complicated, but it's a piece of cake, really - we're pretty good at setting things straight when we get enough details
. Looking forward to getting you back up and running in the morning, Bernie!