HPUX, VxVM, PowerPath and dead paths

Hi guys and gals,

I got a HPUX server which I migrated to another switch. As a result my /dev/cXtYdZ have changed (well actually only the 'c').
I managed to do a vgreduce on the old 'c' devices and vgextend with the new 'c' devices. So now my /etc/lvmtab looks okay.

My question is about the VxVM DGs in the server. I'm not that familiar with VxVM and all its glory .
Here's a short output from 'powermt display dev=all':

root@host:/ # powermt display dev=all
Symmetrix ID=000XXXXXXXXX
Logical device ID=08D5
state=alive; policy=SymmOpt; priority=0; queued-IOs=0
==============================================================================
---------------- Host ---------------   - Stor -   -- I/O Path -  -- Stats ---
###  HW Path                I/O Paths    Interf.   Mode    State  Q-IOs Errors
==============================================================================
  10 0/3/1/0.41.2.21.0.1.2     c10t1d2   FA  7bB   active  alive      0      0
   6 0/3/1/0.98.16.19.0.1.2    c6t1d2    FA  7bB   active  dead       0      1
   8 0/7/1/0.42.2.19.0.1.2     c8t1d2    FA 10bB   active  alive      0      0
 
Symmetrix ID=000XXXXXXXXX
Logical device ID=08D9
state=alive; policy=SymmOpt; priority=0; queued-IOs=0
==============================================================================
---------------- Host ---------------   - Stor -   -- I/O Path -  -- Stats ---
###  HW Path                I/O Paths    Interf.   Mode    State  Q-IOs Errors
==============================================================================
  10 0/3/1/0.41.2.21.0.1.3     c10t1d3   FA  7bB   active  alive      0      0
   6 0/3/1/0.98.16.19.0.1.3    c6t1d3    FA  7bB   active  dead       0      1
   8 0/7/1/0.42.2.19.0.1.3     c8t1d3    FA 10bB   active  alive      0      0
 
Symmetrix ID=000XXXXXXXXX
Logical device ID=08DD
state=alive; policy=SymmOpt; priority=0; queued-IOs=0
==============================================================================
---------------- Host ---------------   - Stor -   -- I/O Path -  -- Stats ---
###  HW Path                I/O Paths    Interf.   Mode    State  Q-IOs Errors
==============================================================================
  10 0/3/1/0.41.2.21.0.1.4     c10t1d4   FA  7bB   active  alive      0      0
   6 0/3/1/0.98.16.19.0.1.4    c6t1d4    FA  7bB   active  dead       0      1
   8 0/7/1/0.42.2.19.0.1.4     c8t1d4    FA 10bB   active  alive      0      0
...

You can see that 'c6' path is the old dead path and the 'c10' is the new one.
Here's an output from 'vxdisk path':

root@host:/ # vxdisk path            
SUBPATH                     DANAME               DMNAME       GROUP        STATE
c6t1d2                      c6t1d2               disk00       PTKM01       ENABLED     
c8t1d2                      c6t1d2               disk00       PTKM01       NoLicense   
c10t1d2                     c6t1d2               disk00       PTKM01       NoLicense   
c6t1d3                      c6t1d3               disk01       PTKM01       ENABLED     
c8t1d3                      c6t1d3               disk01       PTKM01       NoLicense   
c10t1d3                     c6t1d3               disk01       PTKM01       NoLicense   
c6t1d4                      c6t1d4               disk02       PTKM01       ENABLED     
c8t1d4                      c6t1d4               disk02       PTKM01       NoLicense   
c10t1d4                     c6t1d4               disk02       PTKM01       NoLicense   
...

I'm having a problem removing the dead path from PowerPath control (powermt check force) since its been used by the VxVM.
Also what does all the "NoLicense" mean? Does that part of VxVM DMP? Do I have to disable it? How can I remove the 'c6' from VxVM? And can I do all that online?

Many questions, many thanks
Maxim