You can save your document so that you can edit it later.

Photo to Movie only saves pointers to the photos and audio on your computer. Copies of your photos and audio are not saved within the document. If you move the photos or audio, Photo to Movie will not be able to find them when you reload your document (see Loading your document).

To ensure that Photo to Movie can find your photos and music can be found, you can copy all of the files to a folder that will hold all of your document's media in addition to the document itself (see Gathering media into one location). That way it is easy to archive that folder and make sure that all of the media and the document file are included and easy to reload.