When exporting a project from the Gateway the filename is missing the date and ID.
From the manual:
The exported file will have the project name, date, and a 4 digit unique number followed by the file extension (i.e., Compressor_2019-03-21_1123.zip).
It worked this way in Ignition 8.1, but with Ignition 8.3.2 the file name is just the project name (e.g.Compressor.zip). The date and ID number are useful for archiving, and when they're missing it requires additional manual steps with increased chance of mistakes.
(using Firefox 147.0.2)