QB Issue Resolution:

Yes it will but you can go to the bank’s website & choose the date you want to download from.

Resolution for Issue 'Upgraded to QB Pro 2017. Used the download feature which brought in 1604 transactions I already have. What do I do?' available: Yes (Solved).
Source: Intuit Community forum.

Upgraded to QB Pro 2017. Used the download feature which brought in 1604 transactions I already have. What do I do?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for 1604 transactions
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Error Recovery for 1604 transactions [Canada]
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