Confluence Cloud Migration Assistant doesn't start

[Mateusz Suski]

Hello!

I'm trying to migrate my confluence server instance to cloud using built-in Confluence Cloud migration assistant but unfortunately, this plugin can't be enabled.

I tried to upgrade to newest possible version using built-in upgrade mechanism and also via manual upgrade. 

How can I upgrade/enable this plugin?

Versions:

The Universal Plugin Manager (v6.1.3) by Atlassian

Plugin: Version: 3.9.4

Confluence: 8.5.5

Thanks in advance!

[Trudy Claspill]

Hello @Mateusz Suski 

Are you getting any error messages when you try any of this? If so, what are they?

Have you tried uninstalling the CCMA plugin and then reinstalling it?

[Mateusz Suski]

hi Trudy! Thanks for all your suggestions. I found in log files errors regarding tables that already exist. When I removed all tables related to the cloud migration plugin and then tried to enable them again everything worked.