Jpg to vector for laser cutter problems

I am preparing existing jpg files to vector files for a laser cutter to cut and etch the artwork onto acrylic sheets. I followed the instructions for image trace,  expanded the file and saved it as an .ai file before emailing to the laser cutting service. At their end the file appears just black and white and does not have the red and blue lines the laser cutter machine requires to follow in order to cut and etch respectively. At my end the file appears black paths on white with black boundary line and the paths appear blue when my cursor hovers above them indicating it is a path. I have played around with image trace presets, mode and settings thereunder without success. I have also tried saving in different formats without success.

If anyone has any tips that might assist or are even aware of this issue themselves I would appreciate hearing from you, particularly if you've prepared files for laser cutting/etching