Things to consider...

Basically, I need to know what object editor fields I need to take into consideration when making a sliding dummy for example a custom shockwave.

I usually end up wth pathing issues, dummy not moving over walls etc.

Give the dummy the Locust ('Aloc') ability and most pathing problems will disappear.

When you give a unit Locust, doesn't that also mean you should give it the Invulnerable (Neutral) ability, also? The dummy unit can't be targeted, but I think units will still try to attack it if you command them to move and attack.

No, you can't attack even with attack move (not sure about triggers though, though I'm pretty sure triggers aren't a problem either). Locust pretty much makes the unit invulnerable and untargettable by anything.

You can just copy the xe dummy unit. In fact, if you're making a shockwave type spell, xecollider will make your life a lot easier.

Well adding locust was really a no brainer and thats doesnt work either.

Could it be due to the fact that im ordering the dummy to move instead of sliding it?

Yes. What movement type does it have? Although you really should be sliding it..

its movement is set to NONE at the moment.

Anyway I just assed myself to trigger a slide so its fixed.

If that's the case then yes. I've tried this myself before and I have run across the same pathing problems you're having because I was having the unit move and not moving it via triggers. Most of my spells still having dummy units that are given a move command. I'll change it eventually; I'm just being lazy. lol

Seriously, xecollider makes this sort of stuff so very easy to do. Heck, I'd say it's easier than giving a move order.

wisp + locus - model = dummy