The process we propose in this paper is in keeping with a more general thought about e-learning systems reengineering. It deals more precisely with pedagogical scenario reengineering by assisting designers in the uses tracking definition phase in order to allow them to a posteriori understanding of the learning session sequence. From this point of view, our process presents some advantages. First, it allows the recommendation of uses to track from the designer built scenario structure. Then, it proposes a formal way to transcribe these observed uses in a design interpretable language, and thus to compare a priori scenario to the one resulting from a posteriori observed uses. Lastly, it relies on an analysis at a meta-model level of the pedagogical modeling language chosen by designers and, therefore, allows complete dissociation from a chosen language.