Reversal Process for G/L Posted Import Transaction

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How to do a reversal entries in  Sage 300 Real Estate & Construction to clear the posted G/L entries. What happen was, I imported my report in GL then I realized I made a mistake. After correcting my mistake, I re-import my report again using the original batch I created then posted it. While I was reviewing my account with current balance, I realized that my entries from the report I imported are doubled. I know I can delete each posted entry but it will take me a while so I am wondering if there's a way I can reverse or delete the whole batch instead. Thanks in advance!