Interplay Check-in's not appearing

Hi,

We are running Media Composer 2018.12.5 in an Interplay Environment (2018.11 for IP clients / 2018.9 Interplay Engine).

When you check a clip (or anything) in to Interplay, the check-in appears to complete without issue on the Media Composer side of things. When you check in Prodcution Management window or in Access the clips have not appeared however.

Have tried checking in as the Administrator or as a new user to a new folder with no luck either.

Any ideas?

Jonathan