Has there any option(s) / work around to export fiddler trace files as .jmx files to be imported into JMeter?
I've created an extension which can transform HTTP request to any other text format as long as you can create a simple Mustache template for it. Recently I created a template to convert Fiddler Http request to JMeter project i.e. JMX file. It's a basic template but you can customize as per your needs.
https://github.com/hemantsharma-io/MockingBird#convert-a-get-http-request-to-jmx-ie-jmeter-for-perf-testing-in-fiddler