No, you cannot copy/transfer the data. No such thing as a Gen 2 card.
There are SD, microSD, and CF size cards from Navionics. All the microSD cards come with a SD adapter.
Check the card to see if it is really a microSD inside a SD adapter.
Humminbird Helix 12 SI, 1198c SI, 1198c SI, ONIX 10 SI NT, 360, RC-1