Is that one of the purposes of the new pipeline? If so I'd like a source for that info if you don't mind.
The purpose for the new pipeline is to have a pipeline that can carry the Canadian Sand Tar oil to market. Right now they have no other method but the pipeline that just busted a leak or rail (which is absurdly more expensive and inefficient).
Regardless, if they can't build new pipelines or they perceive that building new pipelines will be a huge and unnecessarily high cost they will simply plan on using the existing infrastructure instead of designing and building new and better infrastructure. 1 + 1=2 all day long.
As far as proof, just read the design proposals from TransCanada.