Looking at the different versions in the two folders, I would have to say that /Imperva_DAM/Setup/v14 is for the newer versions once the split between DAM and WAF was complete.
/Imperva_Setup/v14 only contains up to v14.3
For installing DAM, I would use the latest version from /Imperva_DAM/Setup/v14/v14.5/VM
I'm not able to see WAF folders, but I think it would be something similar.
You are right in that DAM and WAF have been separated, and each require an MX.
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Robert Miller
Senior Cybersecurity Engineer
Bank of the West
Omaha NE
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