How to get rid of doubles on my 3d model?

Massadi

Hello, I've retopologized the head I sculpted and when I exported it back to Zbrush it seems like the model got double vertices/edges I guess. The edges look thick and when I try to hide loops using SelectLasso brush I have to click twice.  I've tried to fix it with mesh > cleanup > merge by distance in Blender but it didn't help. Can you tell me how to delete those doubles please? Here are screenshots from Zbrush and Blender:

Neox

don't trust zbrush wireframe rendering too much, you can check if its actually double geo by setting your move brush to topological and moving that part around. does something else pop out or not? if not, its just the way zbrush renders it.

Massadi

Neox said:

don't trust zbrush wireframe rendering too much, you can check if its actually double geo by setting your move brush to topological and moving that part around. does something else pop out or not? if not, its just the way zbrush renders it.

Yep,  seems like its double geo, i tweaked it with move topoligcal

Massadi

P.S I fixed it, just should've chosen edges instead of vertices and use merge by distace. 

goekbenjamin

there is also a "move topology" brush,
you also could have used "auto group" polygroup and split into groups to check