Broken UV map when transferring to mirror object

[Anonymous]

Hi,

I've been having issue when transferring UV map to one side to the another. 

As you can see here, I have 2 armor set: The Shoulder armor and Hand armor. I can transfer Hand armor to other side without issue (using transfer attributes -> Topology) BUT when I transfer the Shoulder armor. The UV map is broken into little pieces as attached.

I don't understand why, both object is pretty much created using same modeling method. Why is it working one object but it doesn't work on the other? 

I also attaching the Maya file itself.

Thank you.

[mihirsbcc]

Nothing is wrong. Since you have done the UV map before mirroring it is copping the same too. DELETE THE History of those 2 objects  it will show up

[mihirsbcc]

I see what is your problem. That is weird.  Quick Fix is duplicate the good one and do SCALE X AXIS NEGETIVE  ONE (minus 1). it keeps the UV intact.

[hamsterHamster]

No, there is no problem weirdness. Just you have topological symmetry in armor_hand, and therefore it seemingly transfers the UVs to another model. In reality, those are UVs that are located in different parts of both gauntlets.

In contrast, the shoulder_armor is asymmetric and TransferAttributes, puts the UVs in mirrored positions, but flipped, so you will have a mess once you apply same texture to whatever mirrored part.

Afaik, it is impossible to have mirrored geometry with same UVs, unless you flip the normals.