The feature was available until May 6th. Billing and attaching expense receipts is a standard and necessary feature for operating a business. They need to fix this and make it a priority. If it's not a bug of the new Invoice rollout and actually a feature (eg will no longer be available), many users will need to find a different platform to manage our businesses.  

This is what the OP was trying to get clarification on. I also called and was told it was not a bug, but no longer a feature.