You sure about the magic luck? Would make more sense if that was the case but in theory that could be map based.
In particular wells, eps and warm lights seem to be set when a map is made.
So if you have a modifier of +100% eps, then this should keep through the event, whilst anything skilling or exp based current event will take priority.
Also worth noting the reverse is also true.
If there was an event with no +eps and the new event has +eps you'd netled to reset the map
This is how I define it.
Monster Wave spawn or found Warm Light with the New Event modifiers which negate the previous event modifiers such as:
+390% Warm Light Effectiveness from previous event, the New Event is +90% Warm Light Effectiveness, upon new encounter (finding a Warm Light) the +X% is reduced.
+80% More Items From Chests from previous event to new event excluding this, the Chest is like a new monster spawning with the current event, not the previous event.
The definition about +X Wells / +X% More EPs / +X More TCs etc I believe is based on the creation of the maze (map or catacomb), thus, you will still encounter that amount.
Hey, I could be wrong, also, there used to be a 2 hour difference with JSP site and loading information from the LS game ... like checking items you picked up in a game on the JSP site 5 minutes later and it does not appear to be on your character from the character page on jsp. Not sure if it works the other way around.