Hello, Does an e-filed return include all schedules and forms (Schedule 2, T2209, etc)? CRA is asking me for additional documents that I believe were already included.

NetFiling or EFiling does not transmit returns or schedules in literal form.

The process simply extracts key numbers from boxes in your software file, and sends to CRA for processing. 

That means you would need to send any slips, receipts or literal documents, for example Schedules, to CRA as requested.