It can be relevant without proving every capability required by the new assignment.
Identify continuity precisely
Explain the architecture, processes or practical experience that carry forward. Mark new features and training needs instead of treating all versions as identical.
The statute defines specialized knowledge as special knowledge of the petitioning company's product, service, research, equipment, techniques, management or other interests and its application in international markets, or an advanced level of knowledge of the company's processes and procedures. Spending can corroborate how knowledge was acquired, but L-1B eligibility depends on special product knowledge or advanced process knowledge, a qualifying related organization, and one continuous foreign year during the relevant preceding three years. If the honest answer is that the system is assembled from standard components and operated conventionally, the specialized-knowledge claim is weak and it is better to know that early than to discover it in a response to a request for evidence. The knowledge showing rests on either special knowledge of the employer's products, services or their application, or an advanced level of knowledge of the employer's processes and procedures, and neither limb is satisfied by long service or general competence in a widely available technology. General technical skill, a hard-to-fill role, or a claim that the employee is difficult to replace does not, by itself, establish specialized knowledge, and the qualifying foreign employment and corporate relationship still need their own evidence.