I unplugged a read back signal cable (that we never have utilized) which indicates the OPEN/CLOSED status of CP4's 10" gate valve and, shortly thereafter, noticed that PT246B had tripped off -> I re-enabled it in CDS but it isn't likely to "fire" at these Y2 BT pressures -> I assume that this is another example of the inter-dependencies with the Beckhoff "daisy chain" setup? I haven't yet adjusted to the new "normal".
This also happened today when closing GVs 5,7. PTs 114,124,134 tripped.