I dont find any commands for cr reload.
My kamailio version is 5.0.

[root@123 kamailio]# kamcmd help
cfg.add_group_inst
cfg.commit
cfg.del
cfg.del_delayed
cfg.del_group_inst
cfg.diff
cfg.get
cfg.help
cfg.list
cfg.rollback
cfg.set
cfg.set_delayed
cfg.set_delayed_int
cfg.set_delayed_string
cfg.set_now_int
cfg.set_now_string
cfg.seti
cfg.sets
cnxcc.active_clients
cnxcc.check_client
cnxcc.kill_call
cnxcc.stats
core.aliases_list
core.arg
core.echo
core.flags
core.info
core.kill
core.printi
core.prints
core.ps
core.psx
core.pwd
core.shmmem
core.sockets_list
core.tcp_info
core.tcp_list
core.tcp_options
core.udp4_raw_info
core.uptime
core.version
corex.list_aliases
corex.list_sockets
corex.pkg_summary
corex.shm_status
corex.shm_summary
ctl.connections
ctl.listen
ctl.who