Is it a problem to show both my old and new passport at Thai immigration after renewing my passport with a Non-O visa?

Hi, a couple of months ago I got my non o based on marriage. Since then, I have had to renew my passport, as old one was full of stamps and visa. The old passport, containg the non o, has been cancelled but, is in my hands. I am due to return to Thailand shortly. Royal Thai consulate in my country cannot transfer visa from old to new passport. Would it be a problem showing both passports to the IO in bkk? Would I need to transfer visa in CW? Thanks in advance for your help