A group of private individuals bought the Porter from USG, then loaned it to the Huckleberry as their backup loco. I assume that it was later donated to the Huck, as it was was the group's intention to hold onto the loco long enough to have it reappraised for a legal write off.
SVRR purchased it about 2001 after it had failed, with the intention of eventually rebuilding it as their work train, rescue and backup loco. Due to the extent of work required and transportation costs involved, SVRR decided instead to sell it to CHS and obtain something else at a later date (#720).
The first time the 1203 again moved under its own power was October 12th at SVRR, and it is expected that it will be available for final acceptance by CHS soon.