help with history

Having gobs and troubles getting my history to work on my mt4...On eu-- i can get my 15min charts to go back to may 20th 2015... my 1 min charts will only go back to oct 12 2015... No matter what i do i cant get them to go farther back then that... I already chaged my tools/options/charts/maxbarsinhistory to 10000000 and max bars in chart to 10000000 also... I went into my "C:\Users\mycomputer\AppData\Roaming\MetaQuotes\Terminal\B8F5C5CB4FFB5CA55C5B66FE33F443D1\history\Tallinex-Demo" and removed all that was in that folder-- restarted my mt4 and still-- couldnt get farther back...

Any ideas?

Also-- is it best to keep all the info in the metaquates/terminal folder vs going /portable and having each copy of mt4 in its own stand alone folder on the c drive?

It is normal...

The difference is between brokers, for example at fxpro, you have much more historical data like others, but when you go deeper in timeframes, you will see each broker have less data. Another good broker to study price is saxo.