Yes, when you launch Silhouette, select Open Project and select the desired project instead of creating a new one. Be aware that some OFX hosts process the image in some way before passing it to Silhouette. For instance, a host may linearize the image and Flame might have a different behavior. Depending on where the project was created, you may need to manually set the Viewer > OCIO controls to make the image look right.
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