I've been unsuccessful getting Saavy to recognize my merged zip file. It only displays the last LOG file. I checked the zip file and it has the 3 LOG files I merged.
It works for me. I just merged my log files from a flight this weekend last night. I did learn early on that the name has to be correct... grt-merge-xxxx.zip You have to rename the .zip file to that format. Also, only merge .log files that are in a sequence.