Storing documents always on Sharepoint

Dear All,

We have installed Adobe Sign add-in on Sharepoint online. Now on the site where it is installed users can initiate adobe sign and the signed documents come back to Sharepoint for storage.

However, I could not test what happens when someone uses Acrobat, when a sign process ist started there, how can I store the signed document also in Sharepoint?

thank you

Dieter