is there any way to edit some part only of this?

[qddmonterde]

when i click convert to editable poly, it just turn out like this. is there anyway that i can edit some part only? not the whole part. 

[MartinBeh · Accepted solution]

You will have to split the mesh for this.

But your geometry is not completely terrible, I still see shaded surface between the edge lines 😉

[casey_hawley]

Are you able to share the file BEFORE converting to editable poly?