Paul,
That's good to know, but I like Dennis' idea better. It will be easier to refer to a printed ahnentafel/WikiTree ID list next to my computer rather than to switch tabs back and forth on Wikitree's long ahnentafel list. (Especially since WikiTree's ahnentafel doesn't show the WikiTree ID numbers without clicking on a name!) It seems to me that it would be easy to program the computler to toggle on/off the ahnentafel numbers on one's own ancestry profile. What would be perfect would be for the computer to list both numbers (ahnentafel with WikiTree ID in parentheses.) I offer this as a suggestion for improvement.