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https://issues.apache.org/jira/browse/NIFI-4863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bryan Bende resolved NIFI-4863.
-------------------------------
       Resolution: Fixed
    Fix Version/s: 1.6.0

> If changing version of flow and new flow has no connection to RPG Port, can 
> get error saying unable to start components
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: NIFI-4863
>                 URL: https://issues.apache.org/jira/browse/NIFI-4863
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>    Affects Versions: 1.5.0
>            Reporter: Mark Payne
>            Assignee: Mark Payne
>            Priority: Major
>             Fix For: 1.6.0
>
>
> When we have a Remote Process Group with multiple ports, we push to the flow 
> registry the ports that we have connections for. I have a connection to Port 
> A and save that to the flow registry, then create a connection to Port B. I 
> have RPG transmitting data. Then I revert local changes. This properly 
> reverts the flow but fails to restart components. This is because it is 
> attempting to start Port B, and there are no connections for that Port.



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