Just passing this True Commerce issue along in case anyone runs into it. Last week troubleshot customer on 4.30 that uses TC EDI. Not sure if this issue is 4.30 specific. They had been working fine for a long time but recently applied a script update from TC that updated the 4 chained V/I export jobs that TC supplies. When running the 4th job in the chain 2 issues occurred:
1) Msg ""ASN Export Files not Found in ../home/textout"" on the 4th job. Turned out 4 empty CSV files were missing from Texout: ASN_S.csv, ASN_O.csv, ASN_I.csv, ASN_P.csv. I created the empty files. This revealed the 2nd problem which then revealed the underlying issue.
2) When the 1st 3 jobs ran it created a fairly populated final CSV in the location where TC reads it. But 4th job kept clobbering that CSV. Most of the contents were gone.
The root problem for both issues was when the script update ran, the 4 new jobs now had a common single Export File (path and file name) as you see in Export Job Maint instead of the 4 separate CSV files above that it had before. Corrected that and it took care of it.