Coworker Removed My Name Off My Work After Applying Small Edits.

I have a coworker on another contract who we will call RR. In the last week I have completed a massive documentation piece requesting the addition of new software and equipment to my systems. Think roughly 6-8 pages of security information, product information, what it would add to the systems, what it would improve, and more. It was a three-week project that I condensed into three days to get it out quicker for signatures and approval. It's basically an important assessment for a growing huge project that I am honored to be working on and assisting my coworkers on my contract to have the ability to use the software and equipment.

Now when I send this out for signatures, as a courtesy the file is also shared to the other contract employees who are related to the project, but have different responsibilities/not the same company. RR is one of these said other company employees who also sign these sorts of assessments to show collaboration/show that they know what's going on. They can provide edit ideas or thoughts, but it's really up to their head boss on if it moves forward. So, if their boss signs the documentation before they see it, they get no input.

With this current document, RR decided he wanted some major changes. These changes include:

• Turning a is to an are.
• Repeat the version changes all over the paperwork, even though its been listed already.
• Changing a an to a a.

After he completed these changes, RR decided to remove my name from the entirety of the document. Even including the section with my signature signing off my part of the documentation for records/due process. His boss already approved of my paperwork and work, but now everything is in limbo because of this.

Mind you this isn't even the first time he's done this. I was working on similar documentation for a different project, nearly had it all done, when it was decided by higher ups that they wanted RR and his coworker to complete the piece. Not realizing that it was almost completed. RR and his coworker took my documentation paperwork from my folder, added a small section and submitted it. Getting all the thanks for finishing it so fast. When in reality, it was all me.

Now I raised a stink about this to my boss today, as this all went down. Their response was "Well we know who actually did the work". Sure, you know today, but in a year when anyone looks at this document for reference, they're going to assume he did. Its enraging because when he does this as well, I don't get information on if the document is moving forward or getting proper signatures for approval anymore. Since I technically "Didn't work on it, as my name isn't on it"

I'm just so angry and unsure what I can do in this situation.

TLDR: 25F fighting to keep her hard work credited to her but 60M different company coworker keeps removing her name and inserting his instead.