These are such key activities that it would be useful to have a "native" action that
selects Import or Export
selects a Plan
selects an Excel or Project object in a OneDrive repository, identifying Bucket name and task details in spreadsheet form - Title, Status, Start Date, Due Date, Description, Assigned to, Labels (CSV string), Checklist Item 1, .... Checklist Item n
Executes the action to either create tasks based on the spreadsheet content, or dump existing tasks to a new spreadsheet
While all this is possible using existing actions, it's quite messy and can be a bit tricky to get to work. Please let's have a simple Import/Export-for-dummies action that does what it says on the box.