Migration from older Abante cart to fresh installation?

[AsatruAlliance]

after having months of issues, and being unable to update (because c-panel/Installatron hates me?), and manual updates failing - I'm installing an entirely new version of Abante Cart - however, my old version/DBs are 1.3.2. While I did a full DB backup (the old site is still installed), I'm not certain that the old database will import into 1.4.3.
I would really love to not lose all my history (or have to re-load hundreds of products and options manually) - is there anything I can do, or am I just SOL?
I searched the forums, but can't locate anything that quite addresses my issue here.
Thanks so much for help in advance.