Describe the bug
When a project is loaded into SasView, the button to replace data in the current page does not do anything.

To Reproduce
Steps to reproduce the behavior:

1. Load a SasView project, e.g. project_new_style.json from example_data/saved_states
2. Select only one of the data sets (e.g. core) and send it to the current FitPage using the Send to ... replacing data in the current page
3. Observe that the file indicated in Data loaded from: ... does not change.

Expected behavior
The replacement should work in the same way as when the session has been generated manually from scratch.

SasView version (please complete the following information):

• Version: 6.0.0 and 6.1.2

Operating system (please complete the following information):

• OS: Windows 11 and Linux

Installation method (please complete the following information):

• Installed: Windows installer