I recently purchased Roots Magic and I have found that there is a problem when you share a tree on Ancestry with someone else. In that case, when you try to resynchronize to Ancestry, there can be a LOT of changes - sometimes thousands. Another person joked he wondered if RM was getting a commission on carpal tunnel braces - he had just accepted several thousand changes.
My recommendation is to add a group selection feature to the changes screen that you can then “accept”. Maybe don’t allow the selection or throw an error if there was a merge issue (changes on both sides). The filter feature at the top will be great with this as often the changes will be in a different branch than I work on. Ex: My wife and I share the same tree on Ancestry be she generally just works on her ancestors.
Under Options in TreeShare you can clear everyone from the changed list. Under Show Everyone you can select a group if there are only certain people you want to work on.
I am not sure how your comment relates - can you explain?
What I am looking for is a way to import changes from an Ancestry tree without accepting them one at a time. For example, when you have shared Ancestry tree and the other person working on the tree does a Family History Binge and the next time you sync there are thousands of changes you have to import - accepting these one at a time would take hours.
Create a Group of People in RM and instead of “Show Everyone” change to the Group Name. You will need to know who the other person has updated.
Anyway, there is no “bulk” way to import the changes in RM other then download the Ancestry tree into a new database and it’s done 
In a lot of cases the changes are just added sources