Hi @cory​

I've been dealing with data in (to and from) GDA2020 but haven't really experienced any issues. What version of Flow/Form are you using? That said, the accuracy of some of those datasets wouldn't really require transformation.

Does your data require conformal and distortion transformation?

Interested to hear more as I'm constantly waiting for GDA2020 to through spanners at some point.

hi @milo89​ 

We're downloading data from SLIP (State Government Authority Portal for WA) and the data is natively presented at EPSG:7844 - GDA 2020 LL.

We found this issue in 2023.1 and 2023.2.

A colleague of mine at another LGA has also experienced the issue (and was the one who first alerted us to the issue).

I'm currently running 2023.2 Form and will be upgrading Flow next week.

It appears that the data is being reprojected approx 1.8m again, so it looks like it's doing a double reprojection using CsmapReprojector.

I'm currently running 2022.2 but I must admit I haven't dealt with much data provided in GDA2020 LL.

I've experienced a similar issue when data was incorrectly provided as GDA2020-MGA54. I believe the reader via the navigator was reprojecting as well as the CsmapReprojector.

Is the source data in the right location when viewing in inspector? Are you setting the coordinate system or reading from file?

Even with the CRS set in FME Form on the Reader and Writers, without the fix, the reprojection of data shows as this;

Black is the known good data.

Red is the data being downloaded, without the fix:

GDA2020-7P|GDA2020|XFORM|FWD|NULL_FME

The only way we know about this fix, was it was SAFE Support that advised one of my colleagues on how to fix it.

I'm just hoping to get the fix put into FME Flow/Form so that I don't have to manually update it :)

Thanks. That's one to keep an eye on for sure.