Need clarification of differences between `AHDC::track` and `AHDC::kftrack` in `alert.json`

[Sangbaek]

alert.json describes AHDC::track and AHDC::kftrack both as reco track.

A better clarification would be appreciated.
My guess from the PR#1368 is that one is track before running KF and kftrack is one after running KF. Then, AHDC::track should not be used for physics analysis?

In any case, AHDC::track:n_hits does not match with the number of rows of AHDC::hits.
Instead, the number of rows of AHDC::hits with the AHDC::hits:trackid that matches with AHDC::kftrack:trackid is the same with AHDC::kftrack:n_hits`.
Is this understood or intended? Or, is this a software problem?

[skuditha]

I can answer the first point.

Yes, AHDC::track is before running KF, and that AHDC::kftrack is after running the KF, as you have correctly observed. Also, to the best of my knowledge, AHDC::track should not be used for physics analysis.