RSLogix5 Bit instruction question

I am working with a PLC5 program that is operating a machine without issues. The program is using several OTL (latch) instructions but I can not find the OTU (unlatch) instructions that goes with each bit. I cannot locate an OTU instruction in the program anywhere.

What am I over looking or can an OTL be unlatched another way I do not know about?

There are other ways ( several) Post your code (if you can) and someone
will help you find it.

They can be overwritten by MOV's, COPY's, Math instructions, Communications, CLR's, HMI's...Or, maybe they are just configuration bits for the program, which are latched on and should never be unlatched.