However, for the two integration plugins: Maybe I am standing on the line, but I cannot see this under the "access" tab. With CB 3.0.0 I used to two plugins to add people who bought this merchandise to some joomla groups and also to activate a subscription for them.

CB Paid Subscriptions is still provided. See our downloads page or the CB Paid Subscriptions page below.

www.joomlapolis.com/addons/cb-paid-subscriptions
www.joomlapolis.com/downloads

The plugin that allows CBSubs to assign usergroups is no longer provided, because it is built into CBSubs now. The parameter to assign usergroups can be found by editing your plan within CBSubs > Plans then under the Access tab you'll find "User Group" under "Subscribers User access level settings".

This means I should uninstall that plugin?

Yes.

Strangely enough, none of the settings in "Community Builder: Configuration" were taken over during the "migration". Is that normal? Do I need to "copy" all the settings manually from the old to the new version?

No, that's not normal. It's possible something interfered with the migration so it failed to move the global configuration.

In the old CB I could choose a template called "bootstrap". Is there something equivalent in the new CB?

The default template is the Bootstrap template. It's also recommended to run the Canvas Layout tool under CB > Tools in order to change the profile usage to be our new canvas usage.

It seems that AutoActions behaviour also has changed. Do you have any hints on how to migrate them? I have quite a lot of them. What I noticed now that some were executed with the new CB that were not executed using the old CB. It's a bit messed up...

EDIT: Looking at this it seems that the auto actions are still there, also the "Action", but the "Condition"s got lost during the migration. How can I avoid that?

Is there a way to migrate CB and CD Auto Actions without loosing the configured data?

You shouldn't lose anything during the migration. Its install script includes migration of conditions. It however is a migration and is not guaranteed to work properly for every install. For example an error could've happened that stopped the migration. To force it to remigrate you'd need to drop the _comprofiler_plugin_autoactions database table then import your old table back in then re-install. If conditions fail to migrate again will have to look into why that migration isn't working right. Yes, CB Auto Actions has undergone a massive improvement compared to previous releases and recommend becoming familiar with the changes if you used CB Auto Actions a lot.

It is not an integration. Navigate to CBSubs > Plans. Next edit your plan and click the Access tab. Scroll down to the fieldset "Subscribers User access level settings", which will have 1 parameter labelled "User Group". If it's not there then CBSubs is not up to date.

Anything that did not migrate will likely need to be manually fixed. I can't see any reason in source for conditions to fail to migrate, but have added a bug ticket to investigate further. CB configuration migration should've worked fine and did when we updated Joomlapolis, but unfortunately I've no further test installs to retest this and recommend manually correcting your CB configuration for the time being.

forge.joomlapolis.com/issues/6076