We have 5 PTF strings with 4 routes in each string. When the top PTF gets a full time route,can any of the other 4 PTF carriers bid for the open string? Assuming district reactivates that string that became vacant, some are saying it goes to the next RCA's that bid. I would think it gets put up again by district and any current PTF'S and most senior RCA can bid. Some say PTF'S cannot bid for other strings. Thanks.