Publishing OSX App for iTunesConnect?

I'm trying to publish an OSX App using Adobe Animate CC 2015.2, but the Apple Loader doesn't seem to accept Mac App as a viable format

I did a quick search and it looks like I need to manually make a load of changes and run a load of scripts on the file as detailed here

helpx.adobe.com/flash-player/kb/posting-air-app-mac-app.html

Post an Adobe AIR app to Mac App Store

Is this the actual process?

Is Animate CC2017 any better ? i.e does it have this stuff built in.

I've held off updating to CC2017 as its new and often new versions are buggy and cause problems, and CC2015.2 is working OK for me to publish iOS apps  and to make a Mac App installer