June 25 (Reuters) - Short bets on the Indonesian rupiah and the Indian rupee retreated from multi-month peaks, a Reuters poll showed on Thursday, as normalising oil prices and central bank measures to attract foreign capital eased some pressure off the currencies. Bears remained entrenched on most Asian units, mainly the South Korean won and the Thai baht, while long bets on the Chinese yuan were trimmed to early April lows, a fortnightly survey of 10 economists, analysts, and traders showed.