Migrating from a site build with Site Origin

Hi.
I am new Generatepress Premium user.

I want to switch to Generatepress from my site build with the Site Origin pagebuilder.

When I try to switch I lose a lot of the text on my pages. I guess it’s text inside some of the rows and widgets in the Siteorigin pagebuilder.

How can I do this process without having to manually copy and paste text from all my pages inside the new pagebuilder ?

I have already asked the Site Origin support, and they said they didn't believe it was possible to do a proper migration.