I am using
https://github.com/chaddro/EasyPopulate-4.0 on Zen Cart 1.5.1 and in in Config I have "Upload File Date Format" = d-m-y but for the special start and end date I have to use YYYY-MM-DD because if I use d-m-y the specials start and end in the 60's :) No big deal but thought I'd mention it encase anyone else is having issues.
Cheers
Tim
BioStim Pty
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