Assignment trades that result from exercised options typically are not booked (or reported) on TradeStation's trade activity until one or two days after the respective transaction date. As a result, users who are importing up to a date within the last three business days may be missing assigned stock trades, if any assignments occured in the past three business days.
We recommend that traders who have exercised options import up to a date no later than 3 business days before the current date. For example, if the current date is Friday, July 19, you should only import up to Tuesday, July 16.
We always recommend verifying open positions after importing your trades to confirm accuracy. See our topic on verifying open positions.