I've been using Sony Vegas for quite some time, but today I encountered a problem I don't know how to fix. I am doing a video with a lot of Text Media (ie text on top of the video) and I usually do it by creating one instance of it, setting the font etc, and then copying it for every new text that will appear in the video and changing the text for each one. However, suddenly, when I edit one of the copies or the original media, every single copy, that is to say every single text media that's been based on a copy of the first one, is edited at the same time. So if I have 10 Text Medias, editing one changes the text in all 10 of them. Not only does this slow down Vegas a lot (it literally takes about 2 minutes for a long text to be written out in the editing window when it tries to change several medias at once), but it also forces me to resort to the tedious process of adding a new text media and changing font, etc, for each new instance of text I want in the video.
How do I fix this?