The tool will override any previous hourly bid adjustments that were there for the campaign in AdWords, and they will be replaced with the changes you're applying. When our system makes changes to hourly bid adjustments through the Hour of the Week optimization, it has to rewrite the all the hourly bid adjustments and replace them with what you've set, which is why you see this message. It will not change any other type of bid adjustment.
If you already have hourly bid adjustments in AdWords, we recommend making changes campaign by campaign, as then you will be able to see any existing bid adjustments the campaign has.
The system stores the data from the moment you link your account to Optmyzr, and only then starts monitoring the changes. It can’t access AdWords’ historical data, so the changes will only be recorded from the moment your account is linked to Optmyzr.
Only after this tracking begins, and when using "last 14 days" option, will the tool hide the campaigns for which bids were modified.
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