port-channel change failed

I am trying to reconfigure from channel-group 10 to 20 under my interface e/10 on my 2 5Ks running VPC. Below is what I'd like to accomplish. I did the CONFIG SYNCH->SWITCH-PROFILE NAME_SWITCH, then did the "no channel-group 10 mode active" and "channel-group 20 mode active". It failed when I committed it. Any thoughts? Thanks

EXISTING:      
interface e1/10
  switchport mode trunk
  switchport trunk allowed vlan 12,13
  channel-group 10 mode active

DESIRED:
interface e1/10
  switchport mode trunk
  switchport trunk allowed vlan 12,13
  channel-group 20 mode active
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leblancAccountingAsked:
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Marty LopezNetwork AdministratorCommented:
I have usually done  the commands as shown below:
sh switch-profile
!
Profile-Name From above eg:
!
switchabc(config-sync)# switch-profile vPC10
Switch-Profile started, Profile ID is 1
switchabc(config-sync-sp)# buffer-delete all

Then apply configs, commit etc.

I have seen config-sync hang when someone accidentally  goes into "conf t" instead of "config sync" and apply then save configs.

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atlas_shudderedSr. Network EngineerCommented:
As a general rule I would run:

conf t
default int e1/10
interface e1/10
  channel-group 20 mode active
interface po20
  switchport mode trunk
  switchport trunk allowed vlan 12,13 

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