Import Adobe Flash Builder projects
Launch IntelliJ IDEA.
If the Welcome screen opens, press Ctrl+Shift+A, type
project from existing sources, and click the Import project from existing sources action in the popup.
Otherwise, from the main menu, select.
In the dialog that opens, select the directory in which your sources, libraries, and other assets are located and click Open.
Select Next.and click
Configure the project:
Flash Builder workspace or project: specify the location of a file or directory that you want to use as a source of import (a Flash Builder workspace or project directory, a .project file, a .fxp or .fxpl file, a .zip file that contains an ActionScript project.
Project name: specify the name of the project after the import.
Project files location: specify the directory in which you want to store the project. If you are importing an .fxp, .fxpl, or zip archive, it will be extracted into this folder or its subfolder.
Project format: it's recommended that you use the directory-based format.
If you are importing a Flash Builder workspace, the page shows the detected projects. Select the ones that you want to import.