Merging from new Trunk question

[Z W <mp...@gmail.com>]

Hi All

We have been merging from trunk A to branch B; recently another branch C is
created out of trunk A; trunk A is frozen and C has become the new trunk
for us;

1- will the mergeinfo in Trunk A be copied over to Trunk C so that we can
continue merging from Trunk C to branch B
2- would be there issues with merging back from Branch B to Trunk C ?

Thanks
Sincerely