The train will still serve the city albeit it will stop at sambalpur city halt.there are many examples in the past that it has been done. The sole garib rath train in secr bypasses zonal hq bilaspur and goes through usalapur to avoid lr.abkp durg exp was also diverted earlier. Well am not personally advocating any thing, just citing examples from.past. and it all depends upon ecor that how fast it completes electrification process.
Bypassed or not this still a very good train averaging 54 km speed despite so many halts. (except the avg cleanliness) and personally prefer it while going to delhi from bsp