Import Plugin failing to import. No route to host

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1

Jenkins setup:

I just installed the import plugin to migrate jobs from a jenkins to another (in this case is the same machine). I added the credentials, I can have a list of the jobs, but once I click “import”, after a few seconds, I got the message “FAILED - No route to host”.
All my job names are composed by several words.

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Thank you.

2

I don’t think you need a plugin to migrate from a Jenkins instance to another… You could just copy and paste the jobs afaik.
Could that blog post help you: Back of the Napkin Guide to Updating Jenkins, for the uninitiated ?