Here we have an idiosyncratic loss of the past-tense ending -ed in the 1858 Wright edition and, independently, in the 1911 LDS edition. In both cases, we have an obvious typo since the base narrative here is in the past tense. Not surprisingly, this error was not followed by any subsequent edition (neither the 1874 RLDS edition nor the 1920 LDS edition). The critical text will maintain the correct remembered here in Mormon 1:5.
Summary: Maintain the past-tense form remembered in Mormon 1:5, the reading of the earliest textual sources; the present-tense remember does not work at all.