ZBrushCentral

Importing/exporting problems

hello everyone.
I am having some problems to export and import tools into zbrush, i have done this model that now if i want to export a subtool of it that tool will get in another position in space and with a diferente scale, even if i just export it from zbrush and then import it it will already change its scale and position.
The only solution to get it out of there was by combining all the model so it could keep the shape but if i want to import uvs or project normals and so on is a pain in the ass.
It seems like a pivot problem but why the scale? well i hope anyone could help me out to understand what it’s happening here, thanks.

Bumping this, cos I have the exact same problem. Been searching the forums and experimenting for close to an hour, with no luck.

Exporting an an obj is making it smaller and offset when reimporting back into ZBrush.