Ok I'm confused because you talk about Exporting and Importing. Which is it?

There is only 1 test suite per project that is made up of several components. If you export your test suite, everything is exported, all components. But it's easy for you to filter in Excel.

In terms of importing, yes, you could import multiple Excel files that each contain different components. That would work.

Does this adequately answer your question?

You have access to this information in the "Recent activity" section of a bug report.

Luca you don't have to create a new account. To achieve what you want, you can simply create another organization. It will have its own projects, its own internal/external users, etc. A user can be a member or account manager of several organizations, presumably if they are involved with different companies.

You can simply create a custom status "Reopened". We do this internally for some projects and it works well!

We've changed this completely in our new version 3.0 beta.

We killed the concept of "project type"