Section 4. DELIVERY AREA OPENINGS IN PACKAGE CENTERS SELECTION OF VACANCIES
C. All permanently vacated or newly created “Protected Jobs” (RPCD’s) working a Monday through Friday workweek shall be bid and awarded in the following order;
Step 1: Permanently vacated Monday through Friday “Protected Jobs” shall be offered to all current 22.4 combination drivers in seniority order;
Step 2: Jobs not filled in Step 1 above will be posted for bid to all other full-time employees within the building, regardless of classification, using their Company seniority date.
Step 3: Any remaining openings in the number of “Protected Jobs” after Step 2 above shall be offered to all part-time employees, by Company seniority, in accordance with Article 3 Section 1(B) of the Sort Addendum.
Step 4: Any remaining openings in the number of “Protected Jobs” after Step 3 above shall be offered in accordance with Article 6 Section 6 of the Western Region Supplemental Agreement, provided, however, that no RPCD position shall be filled by an outside hire unless the job remains unfilled after exhaustion of the applicable bidding procedure contained herein.
So here is how it goes according to my local, If you want to go RPCD M-friend you need to first go 22.4
it's laid out pretty clear.