Writing: When Research Blows the Story

On another venue, another writer mentioned how annoying it is when you do the research and the research then blocks the story you were writing.

Very, very true.   However, there are writerly workarounds that do not always require starting over from scratch.  (There are times when nothing but  ripping the manuscript to shreds will work, but if you can save the effort you've already put in, why not?)

To start with:  nobody but the writer knows how the story goes.  Changes to the story, before even a