Yes, unless you have an emuNAND.Quick question on transferring saves with CFW to new memory card.
Would we just copy and paste the 3ds sd card contents to the new one and that's that?
Yes, unless you have an emuNAND.
Make sure the card is FAT32 formatted though, otherwise it won't work. Cards above 64GB will be formatted to exFAT by default and you need a 3rd party tool like guiformat to format those to FAT32 if you're on Windows.