I am looking for the information which estimator created the estimation of a specific file...in the API and during debugging I see the estimatedPrintTime only and missing something like estimatedPrintTimeOrigin. During printing it is easily possible and I am still using it.
You are correct. The file metadata stored as part of the analysis doesn't appear to include the estimated source. They are separate data models and what you are seeing for job information while printing is Progress Information vs gcode analysis information.