QB Issue Resolution:

In Desktop there is a user Preference setting (in General) called “Default date for new transactions”

you can choose either “today” or “last date used” – you may have the latter setting.

Resolution for Issue 'Correcting the date on an invoice? (Quickbooks desktop 2016)' available: Yes (Solved).
Source: Intuit Community forum.

Correcting the date on an invoice? (Quickbooks desktop 2016): 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 Invoice
Quickbooks Repair Pro will resolve it efficiently and affordably. Guaranteed resolution of your issue, or you pay nothing!

Error Recovery for Invoice [Canada]
E-Tech is the #1 Quickbooks data migration and Conversion service provider.

Get 50% off Quickbooks Online

Click Here for 50% off!

Additional Support Options: