Mass Update of Sales Quotes

Hi experts

I have a problem with sales quotes update.

I need to update 30,000 sales quotes, but using the migration tool is not possible to update and Mass data Maintenance functionallity has not option for sales quote.

We tried to use the migration template but i cannot know the SalesQuote  UUID.

I need to add a new party involved (approver role) in the parties involved  tab for these 30,000 sales quotes.

There is another way to update the Sales quote?

I tried with a MDR but the BO dont´s appears.

Appreciate your help.

Thx.