Trying to convert this part to sheet metal (twisted) - need to ultimately flatten it for laser cutting then form

Hi All,

As the subject says, I have a part here, its part of a large weldment the customer sent us to build.  The rest of the parts are just flats or rolled parts, but this part is twisted so not sure how to get a good flat pattern to cut it.  Its 5/8" thick stainless and there are 4 weldments so one for each.  For sheet metal, "convert to sheet metal" doesn't seem to work.  Likewise for "insert bends".  Maybe "Lofted Bend sheet metal"? - I haven't looked at this yet.  Never dealt with "twisted" parts for forming before.  Thanks in advance for any help!