Data should be stored on the DB, so your plugin should be saving all those QA on a table, so should be able to export that table and then you will have to know how the new plugin storages its data (which table and how) and you import there.
Data should be stored on the DB, so your plugin should be saving all those QA on a table, so should be able to export that table and then you will have to know how the new plugin storages its data (which table and how) and you import there.