Patch with preferred server

Hello,

We want to use the preferred server to patch machine from another location, the patch are correctly downloaded from the preferred server but there is a problem with the VulnerabilityData, when the patch task need to download vulnerability data it always come on the core server donwloading those files that results to a slow line. We have created a folder VulnerabilityData on the preferred server but it does not change anything, it comes at each time on the core server to download

Do you know a solution to force those vulnerabilitydata to be downloaded from the preferred server and not from the core server

Thanks in advance,

Steve