Syncing Sketch files to InVision is a two-step process: first, you need to export your Sketch files as InVision files, and then you need to import your InVision files into Sketch.
Export your Sketch files as InVision files
To export your Sketch files as InVision files, first open your Sketch file in Sketch. From the File menu, select Export > InVision Files.
On the Export InVision Files dialog box, specify the location of the exported InVision files. You can also specify a name for the project, and select a file format.
Note: If you are using the InVision Studio extension for Sketch, you can also specify a custom export format.
Click Export to export your Sketch files as InVision files.
Import your InVision files into Sketch
To import your InVision files into Sketch, first open your InVision file in InVision. From the File menu, select Import > InVision Files.
On the Import InVision Files dialog box, specify the location of the imported InVision files.
Click Import to import your InVision files into Sketch.
Your Sketch files have now been imported into InVision, and you can start working on your design.