When you see a comment like “from #OrderNumber” / “to #OrderNumber” in the Account History tab of MT4 or MT5, it indicates that a partial close (split close) has been executed.
・“From” refers to the original ticket number of the position that was partially closed.
・“To” refers to the new ticket number assigned to the remaining portion of the position.
This comment is automatically generated by the MT4/MT5 server to show the transfer of position details between the original and the newly created trade.