Hi Pilou,

re:
> No possibility to convert dimensions, arrows...in something to be "separated" ?

It is possible to do that by exporting the dimension out to PDF or AI format and then reading that file back in although you will lose the fills. But you can select the things that should be filled and use Construct > Planar to make a surface out of them.

What is it that you are trying to do by having the dimensions separated?

- Michael