DSi Memory Pit exploit - how to change sd card?

Hello,
I have looked for quite a while but I still haven't been able to get an answer.
I used the exploit to install uninstall and twilight menu. Now all of them are installed on the sd card. I need to change sd card however, would a simple copy/paste of the cards content be enough?
If not does anyone have a clue what needs to be done?

Thanks in advance.
Ps: Please move the post if this is the wrong thread to be in.