You only needed to make a new tie in older versions because the birth tie couldn't be accessed. Now .deltie inc will do it since birth ties are always nr 1. (Not sure from what version, but it's a while back)
Also if you never want ties, just do this:
start
.deltie inc
stop
Incrementing and decrementing costs the same as a condition, so it won't be expensive to cut ties every cycle.