Own SVN system VS online updates

Hi,

I use a repository system (SVN) on my server because I have a lot of undergoing online system development needs.

I have also plenty of WordPress installation that are installed from my computer (copy file on my explorer, commit files to server, publish file to working copy to be serve by Apache).

Here is my question: I can easily update WordPress version and plugins directly online, but then I got old file in my SVN, the same old files in my repository and new updated files in my working copy.

Is there someone over here who could give me tips or clues on best methods? I’m not a server engineer, I’m just trying to do my best to stay on track with my little knowledge.

I have at least 38 running WordPress installation on my server, I have few time to upgrade them, and they all use different plugins and themes.

Thanks for your help and advices.
Rui