Possible bug, cards on archived list are been created as open issues

Hi,

First of all, thanks for all the work on this matter, this library seems to be very helpfull for us in our team. We are trying to migrate from Trello to Gitlab without much pain and conserving our history of issues.

I have tried this library with more than 1600 Trello cards. Somehow with this many cards the script seems to stop randomly in some scenario but also has ended satisfactory other times. Thats probably another issue, but the real problem we have with this is we are unable to end the migration because is creating issues as open issues from archived lists on Trello.

¿What do you think about this? Is this a bug? There is something we can do about this ?