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Instead of using "Erase Event" toggle a switch to ON. Then, make a second page that has nothing in it except that on the left side, on the conditions section, check "Switch .... is on".
It doesn't get rid of the event, but whatever that event used to do won't do it anymore, so it's really the same thing.
Just to elaborate a little, you could use a self-switch instead. Just use 'Control Self Switch' to turn Self Switch A= On. Then make a second page and make the condition 'Self Switch A is ON.
Switches work for this aswell but Self Switches seem to be designed for this sort of thing IMO.