The additional detail on the Post status is occurring for reservations due to the Output Format being used for the post process. For example:
  1. Navigate to Financials > Post revenue to GL
  2. Click drop down next to process and select Edit
  3. Note the Output Format

If this is set to Blackbaud Financial Edge with project post format, we will have the additional "Includes do not post activity" added to our reservations’ statuses when posted. This does not de-validate these payments and orders as being posted. You should be able to query on posted revenue in Altru and these items will appear in your results.