Unable to bulk edit sling:vanityPath property in Bulk Editor

[#1]

Hi,

I'm trying to bulk edit sling:vanityPath property but with no luck.
Here is what I did:

1. Navigate to : http://localhost:4502/etc/importers/bulkeditor.html
2. Rootpath : /content/sitename/en_us/foldername
3. Query Parameters : type:Page
4. Content mode: check
5. Property columns: Uncheck all
6. Custom properties /columns : sling:vanityPath
7. Click "Search" - I get 40 pages total, 10 of them without sling:vanityPath set.
8. Click "Export", save "export.tsv"

Did not even try to edit file, just tried to import it back by doing following:

1. Navigate to : http://localhost:4502/etc/importers/bulkeditor.html?hib=false
2. All fields set the same as previously
3. Click "Import", open "export.tsv"
4. Got message "Imported 10/40 lines"

So it seems bulk editor does not import custom properties if they are set.
Could please someone help me with this?

If this is a tool limitation - is there any other 3-rd party tool/script for bulk updates?

Thanks is advance.

[#2]

Was there any error in the log files?