UPF from 2.4.4 to 3.4.5: previous Job Templates not displayed & Remote Execution failing

Dear all,

maybe someone else had the same problem…

Steps:
I upgraded from 2.4.4 => 3.0 => 3.1 => 3.2 => 3.3 => 3.4.5

Result:
previous Job Templates are not displayed
Import of private Job Templates is failing with Error "has already been
taken"
Import of public JobTemplate is failing with "not found Please try to
update your request"
Remote Execution wants to connect to TCP3000 even Config is setup to listen
on TCP9090, therefore all Jobs are failing too

Thanks,
Christian

Remote Execution: fixed as described
under Bug #20206: Remote Execution sending error after upgrade katello 3.4.3 - Foreman Remote Execution - Foreman
<Bug #20206: Remote Execution sending error after upgrade katello 3.4.3 - Foreman Remote Execution - Foreman>