You can add new files to a project in a number of ways.
When adding a new file, SEGGER Embedded Studio displays the New File dialog, from which you can choose the type of file to add, its filename, and where it will be stored. Once created, the new file is added to the folder whose filter matches the extension of the newly added file. If no filter matches the newly added file extension, the new file is placed underneath the project node.
The new file is added to the folder without using filter matching.