Disclaimer, I do not have a replica environment, this is just a suggestion.
First thing I'd test if the following works:
At this point, you should be able to use the id $USER command to lookup any user in Active Directory. In addition, the getent passwd $USER command and getent group $GROUP command can be used to lookup further user and group information in Active Directory.
If not, check out the third link for more direction troubleshooting.
Next to set all passwords to expire:
getent passwd|cut -d: -f1|xargs -n1 passwd -e