Fb is now once again actually recording trends.
A section of the daqdrc file (located in /opt/rtcds/caltech/c1/target/fb/ directory) had been commented out by Alex and never uncommented. This section included the commands which actually make the fb record trends.
The section now reads as:
# comment out this block to stop saving data
#start frame-writer "188.8.131.52" broadcast="184.108.40.206" all;