Share registers, the closing documents, certificates of incorporation and the group ownership chart do the work. Financial statements and payroll records for both entities show each is actively doing business. A purchase agreement that has not yet closed evidences intention rather than the relationship the petition requires.
Ownership is shown, not described
The paperwork has to trace a line from the Canadian employer to the American entity that a reader can follow without being told the answer. That normally means the certificate of incorporation for each company, the share register or membership ledger showing who holds what after closing, the executed transfer instruments, and a chart of the group drawn to the level of individual shareholders where the entities are privately held. Where the parent rather than the Ramara operating company holds the American shares, the affiliate relationship runs sideways and every link in it must appear.
Doing business is a separate proof. Recent financial statements, sales invoices, lease agreements and payroll registers for both sides establish regular and continuous activity, which is why a dormant holding company on either end causes difficulty. Assemble all of it after closing; a package built on draft documents will need rebuilding.