Steps to reproduce:

1. Export the template/host that contains browser item with parameters (For example template: Website by Browser)
2. Open the export file
3. See the data related to browser item (in case of Website by Browser template, search for item: Website {$WEBSITE.DOMAIN} Get data )

Result:
The script and item parameters are missing. Not possible to import the template
See screenshots:

Export data:

Error on FE, when importing the file:

Expected:
Browser item's parameters should be properly exported.