If I click the Line Select key next to Zero Fuel Weight on the Init-B page, it is populated with a value that does not match what is on the EFB. This often results in the MCDU saying the cruise altitude is above the recommended maximum.
Doesn't really answer my question - if the plane is importing wind data from the Simbrief flight plan then something is wrong. If it's coming from MSFS, then sure, yes, maybe it's right.
Would be nice for iniBuilds to clarify.