Exporting HAR with content from Chrome; import into Fiddler. Get messages such as "ResponseBody (3,865 bytes) was dropped to conserve memory."
I think what is really going on is that Chromium does not export the "text" for all resources. If it does not export anything, I think this message shows up. It makes it look like Fiddler did the "dropping".
If there is a limit in Fiddler, I can't find it.
I did not see any configurable threshold when I enter about:config in the QuickExec box
Googling, Eric had documented this fiddler.importexport.HTTPArchiveJSON.MaxBinaryBodyLength when he added HAR import. I did not have any pref set. I set it to 1MB and re-imported the HAR. And still get that same message.