Hello, It is possible migrate Community installation to Professional?

Thanks for your help.

What do you mean by "migrate"?

Of course you can export your surveys as "*.lss" or "*.lsa" and import them into a PRO installation.

The only obstacle is: If you are using 4.x. and - as far as I know - the PRO edition is still a 3.x it will fail.

Joffm

I have my doubts. But, you might open a support ticket with the Limesurvey GmbH and ask them directly. They might be willing to get your Database dump and use it for your Limesurvey Pro account. Not sure if this is possible or not, but only they will be able to tell.

If you self-host LS3, please write at support@limesurvey.org. Unfortunately, as mentioned above, there is no script available to easily "convert" LS4 databases to LS3.