Imports failing due to the "For security reasons, the extension is not supported; error"Issue When upgraded to Orlando patch 4 attaching a datasource to an import through the script receive the following import error "For security reasons, the extension is not supported; not attaching: file:/glide/nodes/folder/bin/../tmp/191ddc841b79505071740fedee4bc.txt" This should not happen as we have the property "glide.attachment.extensions" set to empty to allow all extensions. This functionality works well till Orlando Patch 3.ReleaseOrlando Patch 4CauseAs part of the fix for PRB1388828 a property "glide.import.file.extension_blacklist" was introduced to define black listed files.".txt" is not part of the support file formats, the support ones are "csv,xls,xlsx,json,xml,zip". By default ".txt" is part of the blacklist.ResolutionYou cannot modify the property "glide.import.file.extension_blacklist". As, There is currently another issue that the property is not visible to maint (KB0830986). So, the better solution is to define an non overridable glide property to define a regular expression for allowable files. This can be updated with the glide property "glide.import.file.extension_whitelist". Create the property and add the ".txt" along with "csv,xls,xlsx,json,xml,zip"