Hi Endall, could you please clarify what you meant by MTD? If you are referring to Month-to-Date (MTD), the reason could be that your travel expenses aren't appearing because they were recorded in the previous period. They won't reflect in the current MTD unless they are re-entered for the current month.
If you recorded these expenses in the current MTD and they are still not visible, please check that your date range and other filters are set to the correct reporting period. This should display all relevant transactions.
If you mean something else, please don't hesitate to reply below.