With the Timesheets & Budgets addon, in a portfolio, you can toggle on custom fields Budget (time) and Budget (costs), which is related to your Project Budget information.
Strangely, if you choose to export → Sync to Google Sheets, the Estimated time (total) and Actual time (total) does sync to the sheet… But none of the other fields do!!
My request is to include the Estimated costs (total), Actual costs (total), and Budgeted costs, when visible in the portfolio, in the Google Sheet sync. Why is it a partial sync? 
I’m desperately trying to set this up, and keep running into roadblock after roadblock. The ability for these fields is such a tease because you can’t do very much with them except look at them on the List view of a portfolio.