The user definitions may be there, but the permissions/ownerships on the disks, such as home directories etc won't be
I couldn't zoom in close enough to read the exact list you have, but I've always felt uncomfortable approaching this task this way. I prefer a scripted approach that extracts user info and rebuilds info on new system, this method also then permits merging users into existing systems
Also ensure things like user/group matches in /etc/ssh/sshd_config (sp?) come across