I tried to add the elements from the new XML to the old XML with a comparing tool, but the client won’t run it and it will show as a corrupted file, not sure why.
I need to keep some elements from the old XML while adding the newly added elements from the update. I hope I’m explaining this well.
Is there any tool to do this automatically?
You may want to check out 3DM. It can do XML aware 3-way merging.