Is it possible to publish from the calender description to the notes field in ical?

Yes. In the script "Write One FileMaker Event in iCal Format" add one new SetVariable script step to the ones already there.

Set the variable "$scical_Description" (without the quotes) to "GetField ( $$sc_FieldForDescription )" (without the quotes).

That's it.

Sorry you have to do this at all: we just left the description out when we wrote this the first time.

Thank you