AEM 6.4: Products not visible after upgrade to 6.4

We are having an issue with the products entered into the commerce system in AEM 6.4.  After upgrading from 6.3, I migrated our products to the new JCR location under /var/commerce based on the release notes.  While the folders themselves are now visible when navigating the products page , none of the products themselves appear in any of the directories.

Specifically, what appears to be happening is that calls to

http://localhost:4502/mnt/overlay/granite/ui/content/tree.0.html/var/commerce/products/examples?columnPath=/mnt/overlay/commerce/gui/content/products/jcr%3acontent/views/column

Will return the following, even if there are products in the /var/commerce/products/examples path:

{"items": [],"hasMore": false}

Notably, this only happens if we install 6.4 using the -r nosamplecontent parameter.  Navigating products works fine if the sample content is installed (but has problems with nested multifields due to the sample content registering a sling model for the /commerce/component/products resource type.)

Steps to reproduce:

1 - Create a fresh install of AEM 6.4 Using the "-r nosamplecontent" parameter

2 - Create a sling folder "example" under /var/commerce/products

3 - Create a product node under /var/commerce/products/example

4 - Navigate to http://localhost:4502/libs/commerce/gui/content/products.html/var/commerce/products/example

Expected: The product should be visible

Result: No product is visible

Does anyone know why the default install for 6.4 would prevent products from being visible in the commerce system?