In a food processor, combine the plumped dried cranberries and their liquid, the cooled sugared cranberries and their liquid, and the onion mixture and pulse to the desired consistency. (If you want it really smooth, you can then press the mixture through a strainer, but it's also quite nice when left chunky.) Season with salt and pepper to taste and stir to combine. Let cool completely, transfer to jars, cover, and refrigerate for up to 2 weeks. If serving straight from the refrigerator, taste again before using and, if needed, add salt and pepper to taste. (A chill tends to mute even otherwise robust flavors, so the chutney may seem underseasoned.)