Howdy Adrian Fusiarski,
I am happy you are so interested in our plugin. I just investigated events manager to see if they might have someexport options our calendar can import, such as CSV or iCal. I am not seeing anything that allows you to export the events themselves in one of those formats. 🙁
If you are pretty familiar with writing SQL Queries, it should be possible to export the data as a CSV then import that into The Events Calendar. However, you will likely need to do a few joins and such to get all of the data into one table, and export it from there. If you are unfamiliar with SQL but decent with Sporeadsheets, then you might export all of the data to your spreadsheet program and rework it into a single table. From there export that to a CSV, and import into the calendar.
Does that all make sense? Will that work for you? Please let me know.
Cheers!
– Brook