Where is your credible source about that ship being retrofitted for Bangladesh Navy?
Btw there is general consensus for Any Naval vessels must struck down from their respective Navy before transfer to other Navies, this include to erase their hull registration number. And then they can be refurbished before transfered
Clear examples, Nahkoda Ragam class in Barrow shipyard, before transfer arrangement to Indonesia Navy
View attachment 479209
The same can be said to many transfer case of Bd Navy before from China
This type 54 Frigate is still in active services within PLAN, they are not that old, laid down in 1997, commisioned in 1999.