Some questions about funnels

Hello!

I have some questions.

1. Is this possible to create funnel, using old data?
Since it's impossible to watch analytics livetime, if you for example confuse two points when creating a funnel, then all data collected earlier becomes useless, because a fixed (duplicated) funnel will collect data only from the next day.

2. By what principle will the data get into the funnel?
I created a new funnel, and after updating the data, there was
1 account older than 31 days
1 account older than 8 days
2 new accounts
It might be an accounts created earlier, but never played game before last day or smth?

 

Funnels only begin to capture new events after they are created and don't backfill with previous events as you are suggesting. How are you "confusing two points", sorry I don't quite follow. You as the developer should have full insight into the expected game flow. Level_One always followed by Level_Two, etc