How does a voided check affect the bill?
The bill associated with the voided check may not be re-used.
Note, the check void date may be different from the original bill date. If you are on an accrual basis of accounting, the journal entry that was created when the bill was submitted will show the expense until the check void date passes.
For some, this causes an issue with reporting expenses. To learn how to deal with this, see the following Help Article: Can I Delete a Bill after Voiding a Check? This talks about how to handle expenses which hang out in the system until the void date is reached.