Why are all files marked with 'merge' in TFS?

Question

I am merging my development branch into the main branch. There is only a subset of files that I have changed in my development branch, all other files should remain unchanged. Logically, I only want to merge files which I've changed. I would not check in a file which I did not change.

But when I do the merge operation in TFS, it marks every single file in the tree with change type 'merge'. It looks like I must checkin every single file in the whole source code tree! I really do not want to do this becasue then it becomes impossible to look at the changeset and see what files I acctually changed as part of my project.

At first, I thought I could use the tfpt.exe Undo Unchanged command to undo all the 'merge' changes, but this won't undo those changes.

Anyone have any ideas on this? thanks.

Answer 1

This also happens with a baseless merge. A baseless merge occurs when TFS doesn't have an existing merge relationship between the branches you're merging. As a result, it considers every file 'new' in both branches, so it 'merges' every file.

To create a merge relationship, so that future merges only list the files that you've actually changed, you need to do a baseless merge of all changes up to a specified version so that TFS knows what the common baseline should be. You should do this after merging these changes - it's too late to correct the baseline for this branch now.

If you don't actually want to take any changes from the other branch, but just tell TFS that these are logically at the same version, you can do a merge 'giving credit' for the changesets: tf merge /discard.