Hi 57rp,
To me it sounds like your system is set up and behaving correctly.
.u.upd is used to publish data to the tickerplant. When this function is called the tickerplant will write the records to the log file, publish the data to the rdb, and publish the data to any relevant subscribers. However the tickerplant does not retain data itself (It just contains empty schemas defined by sym.q).
One way to verify if the tickerplant is behaving correctly would be to call .u.i on the ticker. This provides a count of files being written to the log file. If this is increasing and the rdb is updating then your tickerplant is behaving correctly.
Let me know if you have any further questions.
Regards
George