Links in New Blog converted from Old Blog

I have a client who switched to the new Wix blog from her old Wix blog. The links within those posts direct to a 404 page not found. Is there anyway to rectify this? Is there a work around somehow?
She is asking for help with this and I am not sure in which way to guide her.

Hi there, you can do a 301 redirect.

You can find out more information here .