lookup with IF LEFT function?

Hello,

I'm new to the site although I've referred to it a number of times and find it very useful.
I'm hoping someone out there has can help me out...

On the first sheet (Release) that displays store ordering schedules. The cells that have scheduled orders may say something different, but will begin with "Release Order."
The 2nd sheet (Qty), that has daily ordering quantites for each store.
On the 3rd sheet, I am using the IF(LEFT function to look at the Release sheet, and if the cell starts with "Rel" populate the cell with the corresponding quantity from the Qty sheet.
This only works if stores and dates on the first two sheets are all aligned the same.

Is there a way to do this with a lookup by store?
I've attached an example of the data in the workbook (hopefully I did it correctly).