Hi Robert,
Handling time isn’t one of the fields you can set on a CSV import, it’s part of the Shipping Presets. You would have to create a preset to assign via CSV.
If you’re already using named Shipping Presets (not “Manual”) you can just edit those and it will automatically revise the running listings that use them. Once you want to set them back, just edit them again and they’ll revise automatically again.
If you do have Manual ones, you can create Named ones and use the Revise|Batch Change window to set them on running listings, and check the option for Apply to future Listings”.
Also, if you have a lot of Manual presets that were created on an import and want to name them all, the easiest way is to use the Consolidate function in File|Manage|Presets.
This will auto name the presets and assign them to Items and Listings.
John Manning, Senior Developer