[WIP] Fix a typo in exporter-check promise and Fix export import to grace fully kill the parent process started by tee.

While checking tickets, on one computer I found a runner-importer running since 5 days and hence preventing the runner-import to run again. After looking further it turned out that the process was actually the parent process created by the command 'tee', so the process tree looks like

runner-import ----> runner-import ---> tee

if the parent 'runner-import' dies, the child 'runner-import' will still stay and thus preventing the further run of runner-import.