Download File Name format in the export to file type integrations.

When setting the "Download File Name" in export-to-file integrations to save files with specific names in designated inbox folders, should we use "/" or "\" to define the folder hierarchy?
For example:

• Scenario 1: inbox/folder/filename.csv
• Scenario 2: inbox\folder\filename.csv

Which format is recommended? After applying the Sep'25 patch (version 25.0.9.77) to the development instance, using the "/" separator in Scenario 1 now results in an error, even though it previously worked in both production and development environments. However, using the "\" separator as in Scenario 2 resolves the issue.
Is the recommended format now to use "\" for folder hierarchy, and is this change related to the recent patch update?