Question on interpretation of rules intervals

[Liviu Nicoara]

And yet another question also related to the war years:

[...]
Rule US 1942 only - Feb  9  2:00  1:00 W # War
Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
[...]

Zone America/Phoenix -7:28:18  -  LMT 1883 Nov 18 11:31:42
                      -7:00    US M%sT 1944 Jan  1 00:01
                      -7:00     -  MST 1944 Apr  1 00:01
                      -7:00    US M%sT 1944 Oct  1 00:01
                      [...]

When Phoenix reverted from not observing any DST rules for the interval 
Jan to Apr 1944 to observing US rules after Apr 1st 1944, does that mean 
that the DST offset in effect in US (1 hour) introduced in Feb 1942 
comes into effect once again for Phoenix? I.e., did Arizona/Phoenix observe:

...
1944 Apr 1st 00:00:58 MST
1944 Apr 1st 00:00:59 MST
1944 Apr 1st 01:01:00 MWT (War time)
1944 Apr 1st 01:01:01 MWT
1944 Apr 1st 01:01:02 MWT
...

?

Could you please confirm that my interpretation is correct?

Thanks,
Liviu