@Nephron,
Doing a direct data migration from one EMR to another is impossible most of the time and tedious/expensive the rest of the time. I know, I've done my fair share.
Moving to an online EMR is where things often get to the impossible part for direct data migrations as most online EMRs don't support such endeavors. However, there is a happy medium.
You can export your AC data (allergy list, problem list, SOAP, etc.) and imported items to one PDF per patient and import that PDF into the new EMR as an imported item (or whatever the new EMR calls it). You should also check to see if the new EMR will at least support a demographics upload and if there is a template (Excel, CSV) available.
I can export your AC data to PDF for you. You can PM me for details.
JamesNT