Well thanks Bill,
Actually, check out this brilliant workaround for pasting keyframes, sort of. This is in a “copying keyframes” thread a bit down the page. Good stuff.
Depending on what you’re doing, why not split the clip after the keyframes, then duplicate the clip and move it after. Then if it’s footage, slip it to match up the timecodes. Another way to use paste attributes a little differently is to duplicate the clip with the keyframes, then copy the footage you want to fill it and when you paste attributes, paste the content rather than the keyframes. This pastes content into the keyframes you originally wanted to duplicate.