Thank you; I had not seen that KB. It’s something lol.
So I think the answers to my questions are:
Transfer Opening Balances to Next Year is the process
a. (Unless you opt for the manual journal entry option in your Book?)
Book [Maintenance] is where the account is set
No transactions created
a. (Again, unless you set up the Book for manual journal entry)
And you provided the (probably only) documentation. (There’s a little in the help on Book Maintenance about “Put the account here” - now that I know to look there.)
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Edited 2a and 3a for clarity - we use “Manually update future balances” already, and that does no transactions. But obviously “Update by manual journal only” (the 3rd option) would create a trail.