We have one operation that goes missing when time range is anything else then "today".
Seems only to be this specific operation, have no problem with others when changing different time ranges.
Wierd thing is it has worked, have a daily report on this operation, and worked fine until a couple weeks ago.
It looks to be a situation when the URL is active (we see data for it) during business day, i.e. until 5pm and then for the next 7 hours it's inactive that by default ages him out - it disappears from DB until the morning when new business day brings new activity for this URL.
Try to search for your URL in server.log. If you find it in the context similar to:
T RTM 14-09-24 06:49:36.915 URL 130094. http://server.com/service/index.html ( 1411522500000 ) is going to be removed.
it means above hypothesis is true.