You need to promote launch pages to move the content back into the source (production) before publishing. When a launch page is promoted, the corresponding page of the source pages is replaced with the content of the promoted page. The following options are available when promoting a launch page:
Whether to promote only the current page or the entire launch.
Whether to promote the child pages of the current page.
Whether to promote the full launch or only pages that have changed.
Whether to delete the launch after being promoted.
After you promote the launch pages to the target (Production), you can activate the Production pages as an entity (to make the process quicker). Add the pages to a workflow package and use it as the payload for a workflow that activates a package of pages. You need to create the workflow package before promoting the launch. See Processing Promoted Pages Using AEM Workflow.
A single launch cannot be promoted concurrently. This means that two promote actions on the same launch at the same time can result in an error - Launch could not be promoted (together with conflict errors in the log).
When promoting launches for modified pages, modifications in both the source and launch branches are considered.
Promoting Launch Pages
This covers the manual action of promoting launch pages when there is only one launch level. See:
Promoting a Nested Launch when there is more than one launch in the structure.
Launches - the Order of Events for further details about automatic promotion and publication.
You can promote launches from either the Sites console or the Launches console:
the Sites console:
Open the references rail and select the required source page using selection mode (or select and open the references rail, the order is not important). All references will be shown.
Select Launches (e.g. Launches (1)) to show a list of the specific launches.
Select the specific launch to show the actions available.
Select Promote launch to open the wizard.