Mirrored holes won't show in assembly

Hi,

Im trying to add holes in an assembly after mirroring a part but the holes wont mirror. Ive added the files here, unfortunately it wont accept a .rar but all the parts are there. The assembly name is DF-002-009 Top Assembly and the part with the holes is called DF-001-021-1 Flange Plate Test. Can you help?

Probably something simple but i cant seem to find the issue.


Thank You 

Lee

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