Sorry if this has been covered before.... 1)if I use IB as data feed will the data cache over time? In other words, if I keep up with the backfills, will quotracker keep the data indefinitely? 2)I only need 30 min bars, but need them quite aways back for futures. Is there any data provider with a continuous contract that I could use on a one time basis to historically backfill quotetracker and then somehow use the IB feed to update that continuous contract? Thanks for any help.