Billing Module - Contract-Based Invoices

I am having an issue with the Contracts sending cost to Billing.  I have the contracts set up in with "Send cost to Billing" checked and Status is "Approved" but when I go into Billing to select the contracts, they are not listed.

Does anyone have any ideas?  I have unapproved and re-approved, thinking maybe I approved before all the settings were set but that didn't work either.

:(