I did not do a total channel scan where it resets. On the Sony, you can just check for new channels which is what I usually do so I don't lose some of the weaker ones such as Youngstown which I receive occasionally.Unless his TV added 68 without removing 6. Some TV's do that, particuarly those that don't automatically update channel changes. My Sanyo has WLFM listed on 6, 68 and 20. Only 68 at the moment shows the PSIP. My Samsung just has one listing for WLFM, which should automatically remap itself.