Welcome mnmooner! Glad to have you here!
Well, I assume you used the function in the phone to move apps to sd card correct?
Well, that action only moves part of the app. The other part is on the phones internal memory.
However, if you want to, you could move the apps back to the phone, then switch the cards out, then move the apps back to the new card
Your apps should also be auto saved to your google account.
What device do you have?