Hi! I've thought that burrowing flying zerg unit will be fun and managed to made one - burrowing Mutalisk. However, in burrowed state its still considered as a flying unit (i.e. you can't hit with Shock Cannon or any other vs ground weapons). I've tried to use sigorder16 but it changes nothing. Anyone cpuld give me some advice?

A Burrowing Mutalisk? Like how the Dropships landed in the Beta of Starcraft? Sounds cool, but I cant help you. Perhaps this post will bump it.

Burrow + Move = Cloak.

Instead of actually burowing it, emulate the burrow effect with some imgols and so un but actually MORPH it to a ground unit.
Contras, the unit's HP will be resetted.
Other than that there's no way to change the unit type flag by using a tech.

No it won't be.

When you morph it to another unit? I'm pretty sure the new unit will have full hp.

Depends on the kind of morph you use, IIRC.

Don't all morphs reform HP to max?

Yes. Use Siege mode instead

Siege is VERY hardcoded the way it is.

Building morph doesn't ;P

But you can't use them on units now, can you?

Have you ever tried? It could be possible, who knows?

Yes, I have tried.
I have tried almost everything about morphs with corbobocraft.

Well, you could theoretically make the mutalisk into a building that has landing and flying capabilities, and allow it to be burrowed when in a landed building state. But really, that could probably create all sorts of weird problems. Sorry if this is considered a bump or something, but it's only like a week old.