When you add the command, it should not wipe out the existing entries. The new command should simply appear as the last item on the list of "normal actions" in the Button Properties window, Action tab. You then select the item by clidking on it and move it up or down using the little arrow buttons to the right of the list window. To add your learned command, click on "Add IR Code" or, preferably, "Create Link". This action should not wipe anything out. The best way to handle learned codes is to learn them to dummy buttons on a separate IR code page and then link to them. If you handle all your IR codes in this manner, you will save yourself a lot of time and aggravation later on. All of the experienced Pronto programmers use this technique.