I thought they were adding the deluxe edition pathfinder research blueprints

What are they? I'll check when I get home.

There never was a research blueprint.
DD weapons do level up as Ryder levels up, but I think cap is V for them.

As for not getting them after upgrading to DD Edition, I think that is a bug or you forgot to update the game? That's something should be reported at EA/Origin tech support forums.

You need to start a new playthrough in order to get the blueprints & those do level up with Ryder, well, up to lv5, anyway, as I've got them & upgraded to the deluxe version when it became available to all.

Well, that's what happened for me anyway.

It's a shame, really, particularly given that the previous game's Collector's Edition guns were generally much more competitive (the Valiant and Hurricane were contenders for best in their respective classes).

Tbh though, at least they got blueprints. I'm still wearing my original Andromeda Elite helmet as I can't build a new one and it looks so much better than everything else (even the N7 helmet doesn't look as good).

For those on PC, here's a mod that changes the Pathfinder Rank V weapons to rank X stats.

Also, I had the same problem with the lack of schematics for the Pathfinder weapons and Andromeda Elite helmet (my favorite helmet as well), but they all showed up in the development menu when I started a new game/NG+. Wasn't possible to get them in my current game, however.

Its the terminal on the desk in Ryder's cabin where you claim the extra outfits. It might be restricted to a NG+ if you don't have access to it, but I am pretty sure when they added the new exercise look for casual wear that is when I got the schematic.  The schematic is at the very bottom of my crafting list and doesn't have a level it is just listed as "Andromeda Elite Helmet" and it has three augmentation slots due to having unlocked that cryo perk for +1.