Quote Originally Posted by mc12345678 View Post
My guess, and I'll take a look, is that export shipping installs a file that is loaded in after something associated with EP4 and therefore a variable needed by EP4 is overwritten feeding something incorrect to EP4. The fact that it sounds like the install occurs without error (review logs) and that the export continues to work that the autoinstall is not a problem, but there is a conflict in variable usage. Again, will take a look at this, though maybe a needle in a haystack depending on what it is.
Okay, don't know what the issue is... Just installed the most recent version of export shipping information alongside of EP4, performed an export from EP4 using several of the export options, then turned around and imported them without issue... All items identified as being "updated", then modified the data for one of the entries, and confirmed that the piece of data was updated.

Something else must be interferring, in addition there was very little that export shipping does/has in it. Didn't really see anything that would load while EP4 was loaded, so don't see what interference there is between the two. Is this the situation under which you experienced no updates? (Export file which essentially puts the CSV on the server, then without touching the file, trying to import it.) In that situation, what results are presented?