permissions missing after restoring the backup

I have below scenario.

i have scheduled the backup the for server A's D drive & C: drive (os installed)

now all the full and incremental are happening on A server .

now i removed this Server A from rack and install new OS on server B and movd this server into place of A

We now restored the D drive full data from A server to  B server D drive with 3 options checked while restoring

1. verify recovery point

2. copy the original signature of hard drive

3.

now the permissions which are set previously on the particular folder. not coming after restoring .

why the permissions not coming ?

help needed...