interlay: executeIssue special interaction when cancelled beforehand.
if an issue is cancelled it should be impossible to execute it (according to specs). It does however happen at 1993296.
issue_id: 0xdb6f9bf5d46f78d4b88218169aabd5ba22adea848927f6000f333831baaabde7
created_at: 1320285
cancelled_at: 1327489
executed_at: 1993296
link to execution