When I’m doing revisions it can get confusing trying to follow a particular subplot. To make this easier, I create separate word documents for each subplot. I cut and paste every scene for a given subplot into its document, giving each scene a heading that includes the chapter and page number for easy reference. This allows me to quickly see all the scenes together so I can be sure I’ve included all the pertinent information without being repetitive.
I've done this with two larger plot lines but didn't think to do subplots. Brilliant! Thank you once again, Lisa!