Any teacher who does not provide proof of classification upon the commencement of his/her employment, shall be paid a salary equivalent to Level Four (L4) with zero (0) years teaching experience until such time evidence of classification is provided. Upon proof of classification, the Education Authority shall adjust the teacher's salary accordingly, retroactive to his/her first day of employment. All evidence of experience and qualifications, as recognized by the Professional Certification and Student Records Unit of Manitoba Education must be submitted by the teacher to the Education Authority Finance Comptroller prior to June 15 of each teaching year in order to be credited in that teaching year.