Sounds right Joe, established fire ring is good to go for wood burning. Fuel powered is good elsewhere.
Unfortunately, that's not the case for anywhere in the SBNF. Further research yielded this:
"Persons with a valid California Campfire Permit are not exempt from the prohibitions listed above. However, persons with a valid California Campfire Permit may use a portable campfire ring/pit, stove, or lantern in an area at least five feet from any flammable materials provided that the portable campfire ring/pit, stove, or lantern only burns gas, kerosene, jellied petroleum, or pressurized liquid fuel, and has a shut-off valve." So, no wood fires, even in existing rings in developed sites.
Here's the BLM restriction for the non-SBNF area, as of 5/2/22:
Stage I Restriction: • Setting, building, maintaining, attending, or using open fire of any kind is prohibited, except campfires within approved fire pits and grills provided for in developed recreation sites, or campfires within the Imperial County Special Recreation Management Areas, or campfires within the Dumont Dunes Special Recreation Management Area with a valid California Campfire Permit. Controlled flame devices such as portable stoves and lanterns with shut-off valves,using gas, jellied petroleum, or pressurized liquid fuel are allowed and require a valid California Campfire Permit
Based on the above, I think any wood campfires are out for now. I don't have a propane pit. Bummer!