I'm confused - original modeled and rendered abstract images refused acceptance for IP violation.

Is there a way to create a single blanket release for a series of images that contain the same IP elements?

By @DarkClearSky

The first three would be OK with the same reference. If you include the second reference too, you could work with one release assigned to all variants.

In addition, you can prepare a property release prefilled with your data, where you just need to add the dates and the reference.

I'd be inclined to agree about the initial contract being enough - except that I've spent a lot of time looking at aspiring photos in this forum. Perhaps a third of them have an IP violation, maybe more; many people seem to assume that if they can photograph it, they own all rights to the photo. I've seen photos of so many kinds of IP: shopfronts, cars, complete posters, graffiti, toys, coffee cups, Christmas decorations, the Eiffel Tower by night, boats, planes, sneakers, , museum interiors, tee shirts, books, icons, screenshots from games... Some people may also try to sell work made from downloaded models which they rendered, but did not create, or which are a composition including parts of other people's models.... So requiring IP releases may be a necessary layer of protection. Adobe know all about how not to get sued; a big target like them no doubt needs a large legal team.

Thanks for the quick reply!

Let me make sure I understand this. 

The moderator / reviewer was not convinced that these are my images and my IP - and I need to submit a property release to get past this?  If that were the case - should I be doing this for every image I submit from now on?  I completely understand the need to cover all the bases legally, but wondering why I am facing this pushback now after all the prior images I have submitted and subsequently were accepted without this.