Not without assessing what that period actually represents and the applicable employment rules. An invoice date is evidence of a transaction, not a complete eligibility determination.
Set timing after the facts are assessed
Provide the full chronology, including changes of entity and work location. Have the relevant qualifying period and process reviewed before making commitments. Do not assume that changing a current contract can alter what happened earlier.
Work backwards from the date on which the qualifying year is complete and provable, then add the steps that follow it, rather than starting from the date a customer wants the applicant on site. Those steps have their own order: the chronology is settled, the qualifying relationship is evidenced, the specialized-knowledge description is written against duties already fixed, and only then is a filing route chosen, including whether blanket L procedures are available to the group. Hypothetical example: a specialty food-processing plant promises an installation date to its U.S.
customer and asks that the L-1B follow the customer's schedule, which is the one date in the sequence nobody involved controls. Note that L-1B carries a five-year maximum, so time spent in the classification is itself a resource being consumed. Do not sign commitments whose penalties assume an immigration date nobody has assessed.