Version of "Disconnected" ServiceChange messages

Hello H.248 heavyweights,

I have a question regarding the H.248 version that should be used when
encoding a "Disconnected" ServiceChange request.

The way an MG utilizes "Disconnected" ServiceChange requests is
described under Annex F.3.6 of H.248.1:

1/ When an MG detects that it became disconnected from its MGC, it tries
to re-establish its control-association by sending a "Disconnected"
ServiceChange request to that MGC. If the MGC replies to request, the
control-association continues without interruption.

2/ If the MGC fails to reply to the ServiceChange request above, the MG
starts traversing its list of possible MGCs and tries registering with
each of them. The MG will use a "Disconnected" ServiceChange when trying
to register with the original MGC and a "Failover" ServiceChange when
trying to register with any other MGC.

3/ The control-association is terminated as soon as the MG sends a
"Failover" ServiceChange request to an MGC.

Now according to (2) above, the "Disconnected" ServiceChange can be
considered as a registration. Therefore, according to clause 11.3 of
H.248.1, it must be encoded according as a version 1 message. However it
also appears that in (1) above, the "Disconnected" ServiceChange is sent
over an existing control-association; and therefore should be encoded
according to the association's negotiated version. 

Is this the correct interpretation? I.e. Must a "Disconnected"
ServiceChange be encoded using version 1 if no control association
exists and using the negotiated version if a control-association exists?
Or should one of these versions always be used?

Many thanks in advance,
Elad Chomsky