P: Export File Names

I have just had to go on to a subscription version of Light room (7.1.2) having used Lightroom 6.14 for many years.

Whilst it has some useful new features, it doesn't allow the same flexibility with customising file names when you export. For instance, you can't include the original file name plus custom text. Please restore the flexibility and file naming options of LR 6.14!! The lack of this feature is really annoying and frustrating and a big backwards step.