1. Remove data for GBPUSD from database.
2. Open new chart with GBPUSD 60min data for last 2 days from IB. At this moment I can see spikes.
3. Click 'Reload All Historical Data'. Spikes disappear.
4. Switch chart to 30min. Spikes appear again.
5. Switch chart back to 60min. Spikes are there again.
I checked data in Historical Data Manager. Loading data with Data Manager always gets bad bars. Reloading data through charts with Options -> Data -> 'Filter bad ticks' helped only partially. Only some bars are fixed. The rest of bad bars is still there.

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