Cisco :: 1242AG / Change RF Channel On APs On NCS?

I'm looking to make a few adjustments to out wireless network and need to change the RF channels on a few APs.I've logged on to NCS went into the AP, an 1142N,  then the Radio 802.11 b/g/n and changed the RF channel under custom.Once I pressed the save button the channel reverts back to its original channel. I've also tried this on a 1242AG the same thing happens. I then went to the controller and tried to change the RF channel there and it took the change. I pressed apply logged out went back to NCS made the change under custom and again it reverted back after I pressed the save button. I went back into the controller and the channel had also reverted back even thought it gave the impression it took the changel.