QB Issue Resolution:
You can open Lists menu > Templates List, single click every template you Will Not Use, and Make Inactive. Now they are not going to show in the dropdowns.
Next, open and create and Save an estimate or invoice on the template you want, and that is what shows the next time.
Lastly, it matters if you invoice From estimates or sales orders. You can assign the SO Invoice template, in Preferences.
Resolution for Issue 'How can I ensure that everyone uses the same Estimate or Invoice form template?' available: Yes (Solved).
Source: Intuit Community forum.
How can I ensure that everyone uses the same Estimate or Invoice form template?: 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 Estimates
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Error Recovery for Estimates [Canada]
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