Ouvrir un doc Xpress dans InDesign

If you are looking at a one-off conversion, markzware also has a file conversion service (see their Support section), but if you are looking at doing a bunch, then yes, as mentioned, they have excellent conversion tools that will handle current versions which would be more cost efficient in the long run. Regardless, conversions are never exact and there will be differences you will need to deal with.

I believe Quark can save as IDML. I don't know how well InDesign will handle those files. Otherwise, Q2ID is the only other solution.

Non. Les documents XPress doivent être enregistrés en XPress 3 ou 4 maximum. Et de toute manière, je crois (sans en être absolument certain) que la dernière d'InDesign qui peut ouvrir les fichiers XPress est la CS6.

Jette un œil sur ce site : https://fr.markzware.com/products/q2id/