I am confused why the company applied for an "extention" because you had more than a one year break from 9/11/10-6/6/12. Unless you mean it was an extension of the petition filed in 2012.
It should have been a new petition to restart the clock.
The USCIS not only wants evidence of the work experience, the employer has to set out how your technology work is proprietary to the company.
Your work has to show the application of your technology is specialized knowledge particular and unique to your companies product, service, etc and that your advanced level or knowledge or expertise is unique to the company's processes and procedures.
Your knowledge of the company's product , process or procedures has to be beyond the ordinary in the field but it has to be proprietary knowledge that is unique and specialized for your company and not common place in the industry.
I don't know what your company's letter of support showed with regards ***** ***** what you do to be exclusive to the company and not common in the industry in which your company engages.
Unless you manage a department or specialized unit within the company and it is evidenced by the company's organizational chart that you are in that hierarchy at the top level of management, merely being a supervisor of 10 employees under you would not necessarily qualify you for an L1A.
I would suggest that the company refile a new petition since they did not apparently satisfy the USCIS with adequate evidence of your unique proprietary knowledge of the company's particular product or service. It is an art to be able to draft the support letter that specifies in detail the unique nature of your specialized knowledge and how it is different from the industry in general. That is where the weak link in the chain was.
Of course, I am sure you understand your positive rating is very important to me as we are not on salary and that is how we receive compensation, you choosing a smiley face or 3+ stars
In the future, you may begin your questions with “FOR JUDITH” and I will be your personal immigration expert.