Much better to keep all your posts on the same subject to the same thread - I've merged them together for you.
The answer won't be what you want to hear. TiVo/V6 & 360 are completely different software platforms and cannot be mixed in the same home.
Now that you have 360 boxes, any replacements will be 360 and not V6. A voluntary move from TiVo/V6 to 360 is a) One-way, and b) Irreversible. You are now a TV360 customer, and cannot revert to TiVo or V6.
For what it's worth, and although it's too late for you now, no new contract automatically includes a software conversion - a package change is a completely separate and independent "thing" to a voluntary software conversion. You can change from TiVo/V6 > 360 without changing your package, just as much as you can change package deal without changing TV software.
Many people do the two at the same time, but that doesn't mean they must be.
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more
Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks