There’s two options here
You downloaded a map, extracted the TYP file from that map, changed it, and want to merge it back to that particular map. For example: you downloaded a map of Cyprus, changed the TYP file and want to merge it back to that exact map of Cyprus. In this case, no extra steps are required
You want to merge a TYP file with another map you downloaded. For example: You downloaded a map of Cyprus in the past and made a TYP file which you like. Now you want to use that TYP file to change the map you downloaded from France. In this case, you will need to match the family-id and product-id of your TYP file to your map.