Airport jetway re-use

We have an unusual case in an airport project I am working on. It is LEED-CI as we are refurbishing a passenger concourse and some of the back-of-house spaces that go with it. There are 11 jetways ("Passenger Boarding Bridges", or "PBBs" in the industry parlance); 4 are being replaced with new, 3 are staying where they are and being refurbished with paint and carpet, and 4 are being taken out of service at another terminal in the airport so we are moving those to our terminal. The PBBs have a number of architectural components: steel structure, interior carpet, paint, etc., and a lot of MEP components too: they supply air, water and electricity to parked aircraft. It seems like re-using the 4 PBB's should count as part of MR 3, it's less clear to me whether the 3 refurbished in place also count. In general, it's a little unclear whether the line about changing the use of a product is that important here. The ref guide says a door reused as a table counts (of course the table should count as furniture, right, so maybe make that millwork?), but so does door hardware reused as door hardware. A CIv2.0 CIR dated 7/2/2008 says "reused materials are materials that were manufactured, used for their intended purpose, and are being included in a build-out for that same purpose again." By that standard, all 7 of my PBB's would count, wouldn't they? Do you think I'd have to subtract out some fraction of their dollar value to account for the MEP components?