@TomDay if you’re using VPP and you have the apps setup in your JPS as automatic installs (not in front of my console to verify exact wording) then simply deleting the apps should trigger the JPS to reinstall automatically. No need to place them in Self Service.
And if these apps were not originally installed with VPP I believe that is why they are not being updated automatically.
As always YMMV so test thoroughly.
I do have automatic install set up, so I'll give it a try just deleting the apps first thing in the Am, Thx Steve.
What we are doing is we check this

because I discovered that this works the same as on Mobile Devices

because of bandwidth issues, I use appstoreextract to download the iLife and iWork apps, then deploy them, JamfPro and VPP will manage these apps automatically if it detected it doesnt have MASReceipt.
@Eigger Hmm we actually have that setup already to "Automatically update the app". Wonder what's up with that on our system?
I went in to each app for these in question in jamf and hit "Force Update" and boom, they started updating, no need to remove the installed apps!
@TomDay I just recently ran into this so I spoke with both Jamf and my Apple SE. Both suggest removing the non-VPP applications and then let Jamf install the VPP applications you need.
@jhuls The method @Eigger mentioned above works perfectly. VPP apps will replace the apps hat come with the OS from Apple. I did have to kick start the push once in a while by clicking "Force Update" in the app.
@TomDay That's great that it worked. I tried that multiple times and it never worked hence why I contacted Jamf and Apple. Oddly enough both parties acted as if this was the only way to do it(removing non-vpp applications first).