Overwriting uploads in the admin panel

[fryght]

Because we use Payload internally, we would like to be able to overwrite files in the upload field. I have gone through the Payload source code and figured out that it is possible to do so through the local Payload instance. I have however not been able to figure out how to allow uploads to overwrite the old file through the regular admin panel (as it will always append -1 when the file already exists).

Can such a thing be done or would this require significant changes to the current code setup? If so, would someone be so kind to point me in the right direction as to where I might make these changes?