Add Contact information and unique identifiers to Task reports

We have multiple HubSpot portals, and I need to export tasks from Portal 1, and import them to Portal 2.

The way to export Tasks is by creating a single object report and adding the Task fields you want to export.

The problem is here, that there is no access to Contact properties, more specifically, unique identifiers.

So this renders the export-import of Tasks completely useless and unuseable when we are moving portal data from one to another.

My idea is to add unique identifiers such as email or website to Task reports, so that Tasks can be connected to contacts and companies.