How to get next sample in OHIF with other dicom datasets?

[endarelc]

I'm trying to use Monailabel with the OHIF viewer, with these datasets:
https://wiki.cancerimagingarchive.net/display/Public/RIDER+Breast+MRI
https://wiki.cancerimagingarchive.net/pages/viewpage.action?pageId=70226903

I put a bunch of these studies in Orthanc, and OHIF can see and load them, if I manually open them. I can use auto segmentation on them. But when I click next sample, it doesn't find any studies even though the study list can see them.
If I look at the code of the radiology app I don't see anything relevant in there, only the studies arg which in my case is the dicom server url. I pass that in, so... what else do I do?

As sanity check, I converted some of the spleen data from the sample to dicom, and when Orthanc has these then those are loaded when I click next sample. So passing in the url is indeed enough for this. I don't understand how it decides to load those and not the others.
The spleen data has json files which I'm sure are relevant for this in the default method, but not here. Right? I converted the nifti files to dicom with plastimatch and this conversion did not consider this json data I'm pretty sure. And yet still it selects only these converted dcm files, not the files from the above mentioned datasets.