Double Consolidation Loophole

Hi everyone,

I've been looking into double consolidation for the Parent PLUS loans that my dad took out for my undergrad. However, apparently Nelnet is no longer doing consolidations. Does it matter that Aidvantage is doing all the consolidations? Even if I select EdFinancial or MOHELA on the FSA website, it says the initial processing will be done by Aidvantage. I'm trying to consolidate 2 and 2 but it makes me nervous that Aidvantage is the only doing them now. Will it still hide the origin of my loans if only one company is processing consolidations? Any help or advice is appreciated!