Is there a way to make the “activities” related to an individual invoice only visible internally to the company and not the customers receiving the invoice?

QB Issue Resolution:

no if it is on the invoice the customer sees it

use an estimate for activities, convert to an invoice and delete the activity lines

Resolution for Issue 'Is there a way to make the “activities” related to an individual invoice only visible internally to the company and not the customers receiving the invoice?' available: Yes (Solved).
Source: Intuit Community forum.

Is there a way to make the “activities” related to an individual invoice only visible internally to the company and not the customers receiving the invoice?: 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.

Click Here for 50% off!

Additional Support Options:

• Invoice