>I only changed the "Expanded" field, from "Replicate" to "Replace". That was enough to make it work (for REPLACE; now REPLICATE no longer works). I didn't fool around with the other fields, although the tooltip will now probably show wrong information.

Hilmar, whenever I need to change or set anything which is IntelliSense related, I go to its manager (Tools: IntelliSense Manager). In your case, I would advise you to open the Manager, click on Browse on the General page, locate the first REPL abbreviation, set it to REPLI and revert the Expanded text to Replicate (if everything is ok, the abbreviation for the REPLace command is located down the list but from now on it won't collide with Replicate any more).