I created a customized template, saved it and choose it from the dropdown list of options.  Although the dropdown title is correct, the template looks like the standard template I used to use.  I tried deleting all the other invoice templates I no longer wish to use, leaving the customized template as the only option (which looks fine when I look at it under managed templates), but it still reverts to the old-style template, only under the new title.

I also ran the verify and rebuild data functions; all is well there.   Any other suggestions?  Thanks so much!