Indian Railways — pnr status change from rac to waiting

Address:

Lucknow, Uttar Pradesh, 226020

Dear concern,

I vinnu sidhana had booked one ticket from pathankot to allahabad dated on[protected] in waiting list but seven days back its showing rac status. But from yesterday its again showing waiting list. Kindly check that what is the issue behind it. My pnr is[protected]. And i am very much sure that my rac converted to waiting list.
How come its again change the status to waiting from rac.
Rgds

Vinnu sidhana
[protected]