No. Use the evidence relevant to each question. Internal experience may need its own explanation even when academic qualifications are well documented.
Connect learning to the proposed task
Identify the knowledge used in a real U.S. responsibility and the records showing how the applicant acquired it. Avoid submitting a large academic archive without explaining its relevance to the actual assignment.
The most convincing L-1B files read like an internal history. Use genuine test records and explanations of the applicant’s contribution. An internal process name may need explanation for someone outside the company. Use accurate work examples relevant to the proposed US duties. A translation should accurately reflect duties, dates and qualifications rather than strengthen the claim through different wording. A training matrix shows who was certified on what and when. Build the file from contemporaneous company material, not a narrative written after the transfer is proposed. Letters from managers should point to those records rather than replace them.
Payroll records and the employment contract prove the year abroad; the corporate register proves the relationship.