First thing, forum guidelines do ask you to only post your query in one forum and not "spam" across threads - I've tidied these all up for you. And sorry, my reply will be lengthy.
TiVo-software, that drives V6 & TiVo-boxes, is still live and fully supported but is now ringfenced. Existing customers can keep it and conversions to 360 are completely voluntary, but CS quite often offer to change your TV software at the same time as you re-contract your bundle. The two transactions are different & separate, but often done at the same time. These conversions are voluntary, but irreversible - once you've gone to 360, there's no going back to TiVo/V6.
360-software is totally different to TiVo-software, and the two platforms do have some fundamental differences. One that you've come across is the multiroom setup. In TiVo/V6-land, all multiroom boxes are fully functional with recording and pausing facilities, and multi-room streaming in both directions. In 360-land, multiroom boxes (except for converted V6) are minis that don't have hard drives. You can set and watch recordings on minis, but you're slaving from the master to do so. The onboard memory allows for approx 4-5 minutes of live pause - so if you want to pause for longer on a mini, you need to set the programme to record on the master and then "stream" the recording instead.
There's photos of the boxes here - any V6 that you had, would software-convert into 360-masters, any additional TiVo's would be hardware-swapped into 360-minis. Anyone that's told you that 360 does everything TiVo-does, is telling a porkie-pie, the two platforms are fundamentally different. They do many of the same things for sure, but many are done differently. Both have pros & cons. Take a read of this thread which covers some of the more glaring differences.
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