Yes, the BA718 flight was cancelled (some time back) but BA716 and BA720 operated, along with BA8767, so I don't think this looks like a route suspension to me. It is the case that those already booked could be easily reaccommodated due to the Lufthansa Group Guideline, so if you are short of resources it's an easy one to select since you can just ship everyone over to LX. However today 720 was full in CE, just 1 seat available in ET and that was a no-show. 716 was upscaled to an A321 Neo and had 10 full rows in CE and 5 unsold seats in ET, so that's 197+ 143 pax = 340. Then over at BACF 97 passengers out of a maximum 98, the empty seat being in CE. Normally BA is wheel-barrowing the cash to the bank on these numbers since the last passengers to book would have paid north of £300.

Given the context of where we are this isn't ZRH specific, BA is running many services at close to 100% loads, since they cancelled so many services earlier on.