History Data Deleted from Broker's Server or MetaTrader's Server?



There is an EA on both MT4 & MT5 Platforms, HOW to use this wonderful feature if HISTORY DATA ARE BEING DELETED especially 1min, 5min charts & so on?

WHY KEEPING DATA as old as 1999, remove all these OLD DATA to MAKE ROOM for 1min, 5min, 15min, 30min, 1hr charts?

One Year of Quality Data is sufficient, there is NO NEED KEEPING 1999 OLD DATA...am I making any sense??