Despite her runner-up finish at the Thailand Open, PV Sindhu is still placed at No.3 while her compatriot Saina Nehwal remained on 10th.
PV Sindhu lost to Nozomi Okuhara in the 2017 World Badminton Championships.
Chen Yufei of China ended Saina Nehwal's run in the tournament, beating her 21-18, 21-15 in just 36 minutes.
The Indian eighth seed Prannoy overcame two-time Olympic champion Dan in 60 minutes.
Sindhu defeated MalaysianYing Ying Lee 21-8, 21-14 in 32 minutes to set-up a quarter-final against 2016 Olympic champion Carolina Marin.
Saina Nehwal got past Hong Kong's Yip Pui Yin 21-12, 21-16 in 42 minutes in the first round.
Saina Nehwal lost to Akane Yamaguchi 19-21, 21-9 20-22 in a marathon 54-minute match.
Barring the women's doubles match, the Indian team led by ace shuttler Saina Nehwal won all their matches.
B Sai Praneeth gave India a winning start after beating Brice Leverdez 21-7, 21-18 to take a 1-0 lead against France.
Nandu Natekar hailed the consistently top notch show by the current lot of Indian shuttlers.
The BWF Thomas and Uber Cup is slated to be held from May 20 to 27 in Bangkok.
London Olympic bronze medallist Saina lost to Chinese Taipei top seed Tai Tzu Ying 25-27, 19-21in 45 minutes.
PV Sindhu failed to get across 2015 World Championships bronze medallist Sung Ji, an opponent she has played 11 times, winning seven of those encounters.
In the men's singles category, Srikanth, who held the World No. 1 ranking for a week sealed the quarters berth in just four minutes when his opponent Vincent retired at 7-2 in the first game.
Star Indian shuttlers Saina Nehwal, P.V. Sindhu and Kidambi Srikanth registered contrasting victories in their respective opening round singles matches at the Badminton Asia Championships at the Wuhan Sports Centre on Wednesday.
Pullela Gopichand also discloses why he didn't allow cakes to be cut when Kidambi Srikanth became world No. 1.
PV Sindhu went down to Saina Nehwal in the 2018 Commonwealth Games women's singles gold medal match.