Considering that both .qxp and .dcs files come from QuarkXpress and the first one is the default project, if any kind of qxp to dcs conversion is even doable, it would be with this software. But it looks to more of export of some kind fo settings and not actually documents or graphics. If you struggle or have some issue with .dcs files, it would be best to contact their support or reach out to the online community for help.
Updated: August 7, 2023