Choosing where Wwise builds it's banks in Unreals content folder

When using Unreal with Wwise, can you choose where Unreal builds generated soundbanks?
It usually builds them in a folder under Content/WwiseAudio/English(US) however it’s started building them just directly into Content/WwiseAudio instead.
I must have accidentally changed this but I have no idea how and I need to get it to point back to building under WwiseAudio/English(US)

I can’t seem to find anything in project/editor settings or plugins in unreal. Nor anything in Wwise project settings. Only where to build the banks in the Wwise project.

Using UE4.18 and Wwise 2017.1.3
Thanks