I spent some time today creating turnkey forms and dbfs as you recommended. That is when I realized that I put the beginappend() before the form was opened. So moving a few lines of code around, I got beginappend() to work. Beginedit() was much easier.
In addition I was able to prefill some of the entryfields. The prefill for last name does not seem to do what I want, but the other entryfields are good. I'll get it right soon.
Onward.
Peter