We started using options for line cords after I learned more about F&O at the symposium. However, we've run into a weird glitch.
 
When using SO-E to release serialized items that have options, we release the line item, but the same line comes up again to be released. We can't release it the second time because we get a message saying that we are trying to over release for that line. However, if we put in zero for that line then we wind up not releasing that line at all and are given no chance to enter the serial number.
 
Odder still, subsequent attempts to release the line causes fractional releases of 0.5 on the first pass, 0.33 on the second, succeeded by diminishing fractions.  
 
If I then go into SO-A and release the lines by putting 1 in the ship block, 0 in the B/O block, and Y in the Release? block... it releases without any problem and asks for the serial number properly.