Titles gone upon export

Hi everyone. I seem to have a rather unique issue. I browed the community, but couldn't find my exact issue, so I hope someone here can help me out.

I made a video a while back and exported it. It contained titles and texts. All was well. Today, I decided to change something in the video, so I opened the program, cut something out (that's all I did--cut out maybe 5 seconds of videoframe), saved it under a new file name and then exported it under a new file name (it's really the same name with a 1.1 attached).

After the export, when I open the new video, suddenly my titles are gone. The text in the video is still there, but the beginning title and end title do not show. Instead, I get a few seconds of black screen until the video starts and a few seconds of black screen after it ends.

I tried rendering. I tried moving the titles into different Video sections. None of that helped. (I should mention: I also have an image attached to the titles on a separate video line, but they don't show either).

When I go to export, it all shows fine in the little box titled "output preview".

I'm confused why a previously perfectly fine video gets title screwup from nothing more than me cutting out a few seconds of videoframe....??

How do I get those titles to come back?

Thank you!