I'm having difficulty with merging documents. I am trying to merge two
documents that have been modified from the same base document. When I
merge them, sometimes parts of document 1 is missing and sometimes parts of
document 2 are missing. It appears as though the documents are shuffled
together instead of merged.

The procedure I use is
Tools--Compare and Merge Document

I select the document that that's being merged with my document and merge
into a new document. I also choose to keep the formatting changes from my
document.

My document primarily has changes to figures within the document and the
second document has changes to the text within the document. The second
document also has had the changes accepted by the other person editing while
my document has not had any changes accepted.

When I merge, the mark up shows that I have made textual changes (which I
haven't). These text changes were apparently deleted from the document by
the other user and the merge puts them back in again.

Any help to understand what's happening would be greatly appreciated.

Thanks