RankX ranks stuff that does not exist

Greg_Deckler 
I apoligize for not being clear enough. Will do my best to tackle this in the future. How do I upload my .pbix-file? 

1. I have a file but I don't know how to share it. 
2. The measure [Distance from OD %] gives a value to each date depending on a slicer, the code looks like this:

Distance from selected OD % = 
DIVIDE(
    ABS( MAX( PurchaseFacts[OD] ) - SELECTEDVALUE( 'OD Diameter'[OD Diameter] ) ),
    MAX(PurchaseFacts[OD])
)

This is just a measurement on how far away a date is from a selected value in a slicer. 
I want to order these by how large they are. 

Ranking OD Differance = 
RANKX( ALL(PurchaseFacts[Date]), [Distance from selected OD %] ,, ASC )

Nothing Strange this far. It looks like it should

But when I replace SupplierID with SupplerName this happens:

Every date get every supplier.
This is the relationship:

Why is this happening? How can I prevent this?

How Do I upload my pbix-file?