Josh thanks - it worked. I tried again during market hour. After first ensuring that there is enough data in data table of Index (Nifty50, Nifty Bank). I tried to backfill. It did backfill nicely- of last 15 days as expected. Thanks a lot.
But I am facing a little problem, which is not really part of RTD issues and I understand, should not be raised in this forum here : RTD selcts Nifty 50 and Nifty Bank as indexes and hence puts data in Nifty 50 and Nifty Bank in amiroker. But I have historical data of indexes by the symbols: NIFTY and BANKNIFTY.
I tried changing the name in ini file viz:
Scrip1=Nifty 50;NIFTY;Index Value;
Scrip2=Nifty Bank;BANKNIFTY;Index Value;
Scrip3=nse_fo|TATAMOTORS19MARFUT;TATAMOTORS_F1;LTP;LTT;Volume Traded Today;Open Interest;
Scrip4=nse_fo|SBIN19MARFUT;SBIN_F1;LTP;LTT;Volume Traded Today;Open Interest;
As you can see here: after original symbol: Nifty 50 and semi colon, I tried putting NIFTY. But this trick didnt work and it put data in Nifty 50 only. Same with Nifty Bank.
Maybe symbol merger would work in this case. But I am very confused about merging rightly : once I tried long back and I remember losing all the data. Hence, I m scared of doing it ever since then
. I would be truely thankful for any help in this regard.