Hi Adam,
So, you have a sequence starting at 10 o’clock, with enough duration, and one single long subcap effect where you want to import? If so, after selecting a file, it should say something on what is going to happen. What does it say?
If you want me to have a look, mail me the .txt file.)
Then, I don’t like subCap for delivery, Tons of problems with cropping the bottom of the text, random behaviour of the outline thickness and other ugly stuff.
What I do is render out a QT with Alpha from my own software and simply overlay that.
https://www.videotoolshed.com/product/subbits-subtitler/
From memory Matthias also made a render module that can render PNG’s (But then you need a macro to overlay the png’s on your timeline, or you’re in for a lot of work if you have a fair amount of titles.)
If you do this more often, you might want to invest in something more robust, but if it’s a one off, you can always outsource. (Will save you lots of time.)
Bouke
http://www.videotoolshed.com