I was hoping this was the answer --- nope.

My check box just cleared itself again so I immediately checked the name out --- not a vendor -- it is a name in the "Other Names" list and no preferences for accounts for them.

I am using the 2017 Desktop Accountant's version; I don't remember this issue in the earlier versions?

It doesn't seem to matter which of the choices I make under the "automatically remember..." -- I've tried them both.  It will work for a few entries (I use the batch enter transactions because I am entering 20-40 transactions at a time from multiple names --- Others, Vendors...)