Hi, Michael,
I'm not finding that the setting is changing in my Company Profile at all. It's the same as it was a month ago - enabled.
Yes, using the versions you are, in both AP and for BR check numbers, you are able to use letters and numbers only in alphanumeric manual check #s. You are not able to use dashes or slashes. This has been noted for R&D.
Again, yes, in AR and BR, you are able to enter a dash or a slash (along with letters and numbers) within the cash receipt #.
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Regards,
Softrak Tech Support