Understanding Annotative Objects:

Annotative objects in AutoCAD are designed to automatically adjust their size based on the viewport scale to ensure readability.

Issue with Custom Drawing Scale:

When a new custom scale (1:120) is applied, annotative objects disappear if they are not configured to support the new scale.

Options to Resolve the Issue:

Option A: Turning off the annotation monitor within the viewport does not resolve scale issues.

Option B: Moving objects to a new layer does not affect their annotative properties.

Option D: Setting multiple scale positions is a partial solution but does not directly address the missing scale.

Correct Solution:

Option C: Adding the 1:120 scale to the annotative objects in model space ensures that these objects recognize and adjust to the new scale within the viewport.

Steps to Add Scale:

Select annotative objects in model space.

Right-click and choose "Annotative Object Scale" from the context menu.

Add the new scale (1:120) to ensure objects appear correctly in the viewport.

References:

AutoCAD Help Documentation on Annotative Objects and Scaling.

AutoCAD 2024 User Guide on Managing Annotative Properties.