This query is concerning transformations in QGIS. I have done some checks to find out how transformations are applied in QGIS, but the results indicate that the EPOCH is not applied. ie. GDA2020 is aligned with ITRF2014 at epoch2020, the icsm agreed parameters for the transform from ITRF2014 to gda2020 has yearly rate of change of rotational components.
If I am not able enter the desired epoch so that QGIS can apply the correct yearly rate of change, then how do I upload and use a transformation file that gives fixed values for the transformation at the desired Epoch (eg 2023.5)?
A benchmark measured 29/8/2022 has the following lat lon
GDA2020 -33.3971677056 150.2414593000 ITRF14 -33.3971663917 150.2414598444
If the transformations work correctly in QGIS, then these two points, when applied with the correct CRS, should be at the same spot plus or minus mm. But this does not occur.