Hi,
i'm very newbie in Trello and Butler, basically i created some rules to manage a ticket service through mail to card , now i going to explain how it works:
- received mail with an IM in title and add a card to list ARRIVED
this rules check if another card with same name is present in all board and with green layer, catch it and store in new card checklist "REMOVE" and than set a red layer to all card in this checklist

- then this trigger will be activated and check if red layer is present move the card to list REMOVE LIST

- then archive the card that is moved in list REMOVE LIST

so with this three step old card with same mail IM is archive and remain only the new and this is good because is what i really want.
Now the problem is, during test sending mail to board with same IM in title (example IM10)
the trigger of rules in first image randomly stop working after X mail test ( x = randomly number, can be 2 like 4,5)
When this happens instead of deleting the old card with same IM and new card created this happen:
- new mail attachments are appended to old card
- new mail body is posting like a comment in old card
Down here the old card when error happens.

I also checked the log for error but no error is show, because when works correctly everything follow the flow but when is not trigger nothing is shown.
I also checked the account quota, and i don't reach the limit.

Now i don't know if make the rules like this the get my achiviement is good, like i said i'm newbie and i hope someone will help me with a better solution for rules or solution/explanation of what is happening when the error occur.
Thanks.