Excel formula not working when calculating on cells containing formulas

Sheet1 is a linked worksheet, so every cell contains a formula.

Sheet2 is a validation spreadsheet to ensure that all minutes entered in Sheet1, Column E have an associated date entry in Sheet1, Column D. To that end, I'm trying to write a validation formula that meets this criteria:

If Sheet 1, Column E has a number >= to 1, and Sheet1, Column D does not have a date, then populate Sheet2 with "Missing", otherwise "".

=IF(AND(Sheet1!$D2=0,Sheet1!$E2>=1),"Missing","")

The above formula is not working, as despite Sheet1, Column D missing dates in cells D7:D11, Sheet2 does not indicate this by populating B7:B11 with the word "Missing".

I have included a spreadsheet to demonstrate the issue.

Thanks,
Andrea
EE_validation.xlsx
AndreamaryAsked:
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Subodh Tiwari (Neeraj)Excel & VBA ExpertCommented:
Please try it like this...

=IF(AND(Sheet1!$D2="",Sheet1!$E2>=1),"Missing","")

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AndreamaryAuthor Commented:
Thanks, Subodh!
Subodh Tiwari (Neeraj)Excel & VBA ExpertCommented:
You're welcome Andrea!
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