How to Manage Independent Text Wrap on Separate Layers in Adobe InDesign

Somehow, changes have occurred in the latest versions as to how text wrap affects objects on separate layers.

I used to be able to create a photo collage on a bottom layer, and then create a top layer with text wrapping around graphics only on that layer. Now it seems that text wraps around everything from top to bottom. 

I understand that I can "ignore text wrap" for specific text objects, but that doesn't solve my problem.

I appreciate any suggestions. Thanks.

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