I believe the Radio & Television Packagers redrawns were not affiliated with Disney in any way. This is pure conjecture on my part, but it's clear the package was hastily cobbled together from largely bootleg B&W prints that may have been (in some cases wrongly) assumed to be public domain.
An Italian home movie distributor AVO FILM bought up the rights to the R&TVP shorts for Super 8 distribution likely in the mid-to-late 70s. I've seen prints of other redrawns turn up from time to time on other European eBay sites.
I could find no reference to a R&TVP version of "Mickey's Follies" online until this Super 8 print cropped up on French eBay in its original AVO box.
How or why R&TVP thought they could get away with retracing a bootleg Disney print with a replaced soundtrack in the first place is probably lost to time (or somewhere in the paperwork files of whoever owns these redrawns today).
Interesting. If that's so, it's unbelievable to find out that they messed up on their "what's in the public domain?" thinking.
This short isn't the only one I've heard to have been mistook for a "public domain" cartoon; when I saw someone watching a package of Mickey shorts off of Netflix, he assumed
Gulliver Mickey, one of the only black-and-white cartoons included on it, must've been in the public domain (of course it hasn't, Disney would (almost) never leave any of their things to fade into the public domain). Aren't
Minnie's Yoo Hoo,
The Mad Doctor, and
Mickey's Surprise Party the only three Mickey Mouse shorts to have truly fallen into the PD?