Loading Transaction Data Loads Using Infopackage Group

We have an Infopackage Group to Load Transaction Data.

In the particular Infopackage group it has total of 15 loads.

The problem is the first 6 Loads are getting scheduled automatically and after that the loads are getting stopped.

From the 7th Load to 15th Load i am scheduling the loads manually.

Before one week or so all loads of the infopackage group were getting scheduled automatically.

What should be the problem.

Thanks in Advance

Anil