Issue Summary

This is reproducible on Data Center: (yes)

The Theme grid won't export more than the number of items available on its current page, so for example if a Portfolio has

12 Themes in total
10 Themes are displayed on the first page
2 items are displayed on the second page

If the export (Under More Actions) is triggered from the first page, then the exported file will have 10 themes listed, if it is triggered from the second page, then the exported file will have two themes listed

Steps to Reproduce

1. Access the Themes Grid, with or without filter applied
2. Click on 'More Actions' > Export Themes
3. Open the exported file, and compare the results between the Theme grid screen and the exported file
4. notice that only the Themes listed on the current page of the Themes Grid were exported

Expected Results

All items filtered or shown are exported

Actual Results

Only the items on the current page are exported

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available