Hi Marcie,
Sorry, previous value is not available with the "score changed" trigger... instead use "data value changed" and you'll have "previous value" available as a constraint.
As to "routing", it depends on your definition, but basically once a lead is assigned a lead owner, running a sync step at 60 and 100 won't necessarily change anything. You would have to run a "Change owner" step if you needed Marketo to "reroute" leads with 60 or 100 pts. Using the triggers I mentioned, your flow could be something like:
- If lead score 40-59, change owner to A
- If lead score 60-99, change owner to B
- If lead score 100+, change owner to C
etc.
Depending on everything you need to happen at 40, 60, and 100 pts, you might be able to pull it off with multiple triggers and the constraints I laid out above, but you might have to split the campaigns up, again depending on details I may not know about. You're correct that if a lead shows initial interest, and then backs off for awhile, when they come back you want to know about it, based on whatever criteria you decide to use as a threshold. 40, 60, and 100 pt thresholds are one way to do it. Another way is when the lead hits 40, and a sales rep decides they're not ready yet, you could decrement their score down to 10 or 20, and when they hit 40 again, you alert sales again. LOTS of ways to do it.
Hope that helps!