Event Dynamic Field

Is there a simple way to separate the dynamic content from the events app in an exported csv file from the database into separate fields and then re-merge the field before upload?

A client has asked to be able to edit a spreadsheet for upload to the events part of the database. The problem is that there are a number of dynamic fields which are all in one field in the spreadsheet. They add roughly 150 events per year and they mostly get added at the same time.

Thanks

Neil