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Anyway, on to your question: I do not own a P-07 but I really don't think that should be a problem using any other CZ 9MM Magazine with your new weapon. I would try starting with Compact Magazines and working your way to the longer Mags, but if they seat properly and lock in place and the Mag release works without a glitch of any kind, then you should be fine. Just don't try a (mm CZ Sport Tactical Mag! I can state without fear of contradiction that those will NOT even vaguely fit in anything NOT a Sport Tactical of has the same size Mag well.
Actually, as b5.5dan[/u][/i][/b] mentioned, I have about 9 different models of the 9mm CZ's, from a compact up to a full sized CZ 75, and all my mags work in any other CZ 9mm I have. HOWEVER!!! Mer-Cor Mags will fit in my cz75 B anything but WILL NOT FIT IN MY CZ 75 A (or preban) If you try to use a Mer-Cor in one of those it will jam about halfway in and if you are lucky you can get it back out, with out having to take the Slide off and tap it out with a hammer and a Stick/Dowel.