Decided to unmount the old card and put it into the adapter and into my Transcend card reader. It would not read. Noted the card reader had a micro sd slot so I took it out of the adapter and put it into that slot. That worked. Old contents copied and then pasted to the new card.
Now, do I have to do anything to mount it in the phone or can I just slip it in the micro sd slot to use it? I've turned my phone off while doing this so I can't check the settings.
Thanks all for helping me so much with my questions!