speed colouring lost when converting gpx forth-back to data

[anonymous]

import a gpx with time information (with speed colouring on), right click it, convert to data layer. right click again, convert to gpx - speed colouring is lost. saving & reopening restores speed colouring.

rationale for the operation - sometimes it is desirable to remove parts of traces before uploading (overlap from the same gps receiver, unrelevant/private/incorrect data. one of the easiest ways i found was to convert back/forth in josm & edit inbetween.

[framm]

Fixed in r941. This bug was due to an internal, parsed timestamp info not being filled in when the conversion to GPX objects was made. Some will be happy to hear that things like these would not occur if fields were properly encapsulated ;-)