No problem, you can still use the Carminat map. The only features you won't get with the Carminat map are:
1) Cspeech & ASR (Your device must have a built in mic to use this function, which is basically navigating with your voice instead of entering instructions).
2) HNR (Special house numbers for specific countries only, such as Greece).
Always try and use the larger map (if it fits in your device) as the smaller maps may have reduced coverage or detail.