Recurring task instances missing `taskTime`

[jbriales]

I'm working with recurring task instances in the CouchDB and I noticed many (almost all) recurring tasks I have do not have the taskTime field listed under NEW REMINDER FORMAT in https://github.com/amazingmarvin/MarvinAPI/wiki/Marvin-Data-Types#tasks even though they have a time in the title (that can be clicked, and used to create reminders, in the Marvin Web UI).

I wonder what could be the issue here and why taskTime is not populated. If that is because the recurring tasks are too old, what is the best approach to upgrade these to behave as in the new format for new instances?