In OnStepX it is an Config.h option to automatically load the alignment model at boot (default OFF):
#define ALIGN_MODEL_MEMORY ON

If you are not using that option you must Park before powering off to retain the pointing model. If you fail to park you can still UnPark from Home to recover the model.

If is normal behavior for OnStepX at boot to indicate the Park position, even before UnParking IF the date/time is known.

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