To be lazy, I will answer yes
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Ok, to be longer - open the dmsave game in a decent version of CSBuild, let it endian convert the heck and just save es to everything it does, resave as 'csbsave.dat or csbgame.dat as if it were a csbsave.
Open in CSBwin and keep playing for carrying on the DM game, and 'make new adventure' to start CSB with the same characters. Voila