Info only as bandk has moved on. I have used 2 different types of engravers and both required bit maps to engrave or cut. Biggest problem that I found was what material was used. Any metal had to be in bath of water as the reflection from the material stopped the laser dead. Wood, plastic was great but to get a clean cut in brass took me ages to find the right focus for the laser through the water.
Any bitmap editor could easily take the lines out using a number of tools and the reflection the same as well.