It is now possible to generate line sheets from several collections (up to 3 collections / sales catalog of the same order mode), using the same workflow as in the current Line sheet screen (filters, additional information, pages, export format, etc.).
The feature is available as a brand member from the Tools menu at the top right of the showroom.
New Create line sheet item in the Tools menu
Select the collections of your line sheet
Filter, configure layout and export the line sheet