I am finally done running a bunch of tests on some georeferenced data. I was able to get a solid mesh. A wonderful texture. But, I have no where to view it in the intended full resolution. I have run data sets similar and used Cesium Ion directly to tile my data but I am not using that system anymore as the quality leaves a little to be desired. I have however also exported data with the .json directly from RC before and it does not seem to be working correctly as of some update from Cesium on either the plugin for Unreal or perhaps on this side of the fence.
I do believe I have found a solution as I think the convention of tiling that is still in RC or the version might not yet be updated on unreal engine.
Anyhow, when tiling it creates a written document for the entire order of whatever files it needs to reference. Whether that be .json or .b3dm files so it can create differing levels etc.
The error we get in Unreal points to the naming setup that is used to the data so once it gets to the first wrong convention it stops trying to load the data. This article references it more.
https://github.com/CesiumGS/cesium-native/issues/258
atleast that is what I think the issue is.