Lets see,
I checked the trash can so I know they weren't deleted....
I saw that you had a response in the various strains/ diff effects thread, is it possible that you responded in the wrong place or perhaps in a pm? The only other thing I can think of is that you might of hit the preview instead of post and closed the window. I'll admit to having done both of those things more than once

The thread having been moved shouldn't effect the ability for anyone to reply. Sorry I know that I didn't have any answers but I figured you'd at least want to know that much.
Edit: If you were trying to reply to the thread in Vis plants instead of in trip reports that would prolly explain it.