Double line on drawn lines?

Im trying to design a project.

Its a design of an object and there are some open areas when I vectorized it.

So i drew a freehand outline around the whole object in a drawing program.

But when i import it back into Lightburn the outline I drew appears as double line (the inside and outside of the line?

I then put an offset around the whole piece and use that as the cut line, the rest is just engraved.

I can not use the offset feature without the outline because of the open parts of the design.
hope that makes sense?

A picture is often better than 100 words to explain things. If you feel uncomfortable showing your project, show only a section of it or draw something that also illustrates your question.