Moving a Power Platform Solution from One Environment to Another Within the Same Tenant. 

When you import a Solution to your Environment then you will be asked to update the Connection References. Usually it is a simple matter if using your login when asked.

@@analysiscloud thanks for the reply :) I mean importing a solution of a third person to an environment. Connections should be updated with the persons login, because connections work with sharepoint sites and or sharepoint lists where I would not have access to

Hi @@budzugan, When a Solution is imported, that has connections to SPO sites, Dataverse tables and other things, then you will be prompted to update those connections during the import wizard process. This video was for the "same Environment". So, those items will exist. If you are importing to a different Environment it will let you import but in the Flows, etc, there will be broken Actions which you will need to repair, in the Flow. You will get red warning messages appear during the import wizard process.

@@analysiscloud thanks again for your reply

Thank you.

@lancer7418 Hi, it adds to an existing solution replacing (updating) those Components(objects) that already exist.

@@analysiscloud thanks for the reply!