max ric's for get timeseries request

I have a list of 50 ric's that I'm using for a get timeseries request. When asking for only the close field and with a start date of 8-1-2017 to current date for an end date (can use 12-22-2017 for example), the data that is return only goes back to 9-29-2017. However, if I split the list into two, with each having 25 rics, then I get the full request of data from 8-1-2017 to 12-22-2017. From looking around the Q&A's, it seems like my request isn't anywhere near to the "limit"(but I could be wrong). Please advise as to why the data is being limited in my example.

Thanks!