Same thing happened to me, not sure why. Last night the EURUSD chart udpated all of a sudden and now my 4hr is off, but 1hr and daily are still fine.
Sorry I can't help you fix it.
i figured out the updates..
i just loaded from alpari data.. the 1 minute data.. and converted it to 4 hours, and other time frames.
i didnt know that period converter overwrote the existing history files... i was looking for new files in other folders. had to look at the source to understand it.
Here's the new 4 hour data... for anybody that needs it.
it's in hst format.... unzip it first
Files:
eurusd240.zip
52 kb

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My 4 hour data with interbank suddenly changed.. and im trying to fix it to no avail.
My data was from 2004 until today.
Now, the data im getting is a few ticks from 2001.. then suddenly i get todays feed. I dont know why this is happening. totally unexpected.
Can someone upload their 4 hour meta data HST for EURUSD for me pls. I cant seem to get it fixed.
Everything else seems to be fine - all other currency pairs... and times.