[Bug] OR may import RASAero files including motor mass in airframe?

[JoePfeiffer]

Describe the bug

User kjhambrick on TRF reports OR appears to include motor mass in airframe when reading a CDX1 file. See
https://www.rocketryforum.com/threads/altitude-prediction-gap-make-sense-or-v-rasaero-ii.185363/#post-2561719
https://www.rocketryforum.com/threads/altitude-prediction-gap-make-sense-or-v-rasaero-ii.185363/#post-2562165

Quoting the latter:
I imported several single stage CDX1 files into OR and in every case, the "stage override" masses in OR do include the motor masses from the simulation sections of the .CDX1 file.

For example, these are relevant rows from an example EZI-65 file in the RASAero distribution:
Code:

/home/konrad/ezi65-1.cdx1:
/home/konrad/ezi65-1.cdx1:
/home/konrad/ezi65-1.cdx1: J450ST (AMW)
/home/konrad/ezi65-1.cdx1: 10.06
/home/konrad/ezi65-1.cdx1: 59
/home/konrad/ezi65-1.cdx1: 0
/home/konrad/ezi65-1.cdx1: 0
/home/konrad/ezi65-1.cdx1: 0
/home/konrad/ezi65-1.cdx1: 0
/home/konrad/ezi65-1.cdx1:
/home/konrad/ezi65-1.cdx1:

On import, there is a mass override for the sustainer and the "Mass with no Motors" in OR is listed as 4563 grams which is simply 10.06 lbs converted to grams.

I believe the mass needs to be adjusted down by the 'launch mass' of the AMW J450ST ( 1196 grams ) which is easy to do as long as the motor in the RASAero sim is also included in the OR RASP.ENG datafile.

However, maybe not so simple is the CG override ...

OR also sets a CG override = 59 for the Sustainer which is the CG of the rocket + motor from the RASAero sim data above.

The CG override for the "Mass with no Motors" will also need to be adjusted by the Mass and geometry of the motor wrt the launch mass, geometry and CG of the rocket including the motor ...

To Reproduce

1. import CDX1 file

Screenshots / .ork file

Screenshot(s):

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.ork file:

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OpenRocket version

23.09

What platform are you running on?

Windows

Additional context

No response