Firestorm allows objects (linksets) to be saved to your hard drive (exported), and brought back into SL (imported), with restrictions to prevent content theft.
The purpose of export/import is to allow you to create backups of your creations on your own system, in case of SL inventory loss, or to allow you to transfer your created items to other grids.
Detailed export rules are given on this page.
Be aware that if you export a textured object, then reimport it, the textures will be reuploaded, with the associated upload charges. Again, the point of export/import is to allow you to replace lost content, or transfer it to other grids where it does not exist.
Objects can be exported as a Firestorm backup file, or as Collada mesh.
To export an object to your hard drive, right click it and select Save As from the menu. Then select:
A window opens, showing the properties of the item, and giving a few options:
Click the Save as… button to export. A file picker will open, allowing you to select the destination folder and file name.
A window opens, summarizing the obejct to be exported. You have the option to:
Click Save as… to export the object. A file selector window will open, allowing you to select the destination folder and file name.
A file picker window will open, where you can select the folder in which you wish to save the file.
Note that it is possible to export a worn attachment.
To start importing, go to the top menu, Build → Upload → Import Linkset. The Import window opens. First click on the Choose File button, which opens the file picker window so you can browse to the file you wish to import.
Once the file has been selected, you can specify import options:
Click the Import button to start the import. The object will be created near you - unless you are importing an attachment, in which case it will automatically attach once created.