Disputes over the ability of ANZ to transfer home-loan servicing contracts to Columbus Capital do not appear to be an impediment to a planned sale of mortgage-backed bonds by Columbus that will be used to refinance a pool of A$500 million in loans acquired from ANZ.Marketing by Columbus of the mortgage-backed bonds is stepping up, with the release yesterday of pre-sale reports by Fitch Ratings and Standard & Poor's on the Triton Trust No.2 Bond Series 2013-1.The mortgages were originated by ANZ's Origin Mortgage Management Services, a business that ceased originating new home loans in 2008. Columbus also ceased originating loans under its own programs in 2008.The loan pool is thus highly seasoned, at 95.6 months (or almost eight years). The average loan-to-valuation ratio is 60.5 per cent.Pre-sale reports do not spell out who the main mortgage managers responsible for the loans are, but major Origin customers were Aussie Home Loans and FirstMac, as well as Pioneer Mortgage Services.The reports also do not touch on the controversy over delivery rates and fees, which might impact on modelling of the excess spread available to repay investors in the bonds.In addition to the dispute between Pioneer and Columbus reported in the previous article, Firstmac has recently criticised Columbus over plans to increase funding costs to the mortgage managers by as much as 1.6 percentage points. FirstMac claims it is in breach of long-term arrangements with ANZ. ANZ is still in the process of transferring all the work to service the loans to Columbus. The bank maintains responsibility for primary servicing and chasing late payments.Columbus will take over all servicing and collections functions from ANZ by the end of 2013.ANZ is one of the lead managers on the sale of the bonds.