The petition should describe the knowledge he already holds and the work he will do in the United States. Finishing a current revision first can strengthen the authorship evidence, but the filing should not be delayed indefinitely for a document that is never final.
File on the knowledge that exists, not the version that is coming
Hypothetical example: a Rothesay company's validation specialist is midway through a major revision of the cleaning-validation protocols, and the company wonders whether the petition would be stronger with the revised set. The specialized knowledge exists now, evidenced by the current protocols and their revision histories showing his authorship over years. If the revision will be complete within a few weeks, including it with a document-control record showing his role is a modest improvement.
If it will take months, the petition should be filed on the existing record, with the revision described as work in progress that he will carry to the U.S. plant. Once approved, he can be admitted at a port of entry as a Canadian citizen without a visa stamp, and L-1B employment begins on admission.
Meetings at the U.S. plant before approval must stay within business-visitor limits and must not become the assignment itself.