I created a branch from the trunk, and made all the necessary changes. When I finalized the changes, using Visual Studio 2015 I merged the branch with the trunk.
I was resolving conflicts when I made a mistake in choosing one of them. I made the revert in the solution to merge everything again, however, this time Visual Studio or SVN itself does not "find" any pending commits, it's like I've been merging everything.
When I open the branch, I have my changes, when I open the trunk, I do not have the changes, if I merge the branch with the trunk, there is nothing pending.