In spite of its convenience, calculation of electrophoretic mobilities is a tedious process, and so we recently developed ROMANCE, a software allowing to automate the process of converting batches of CE-MS files into effective electrophoretic mobility scale . As it has been already described, files using this x-axis instead of time scale, present several advantages such as constant peak position for a given compound, no need for alignment and better shareability of experimental and reference data between different labs. Nevertheless, our previous article was focused on how the use of the electrophoretic mobility scale could improve metabolite annotation, while paying little attention to the influence of the time-toelectrophoretic mobility conversion on the peak area.