Thanks for your quick reply and reverting your changeset. The Ortho from IGN is fairly recent, June 2023 for Calvados but could be older elsewhere (each département is updated every 3/4 years) and is quite accurate on ground level. It is a better move to use it while mapping in France. Interestingly in the area, the Bing imagery is at a higher resolution than IGN and although it is not well aligned and older, it can be useful to check that one as well. If you have any comments or questions, feel free to ask and I hope you are enjoying your stay . David