Hello there,
The coordinate system Irish National Grid TM65 (EPSG 29902 previously 29900) is not depreciated. It is also not the same CRS as TM75, there are mathematical differences which can effect the coordinate locations. They are both Irish National Grid.
The southern Irish Ordnance Survey has moved to using Irish Traverse Mercator (EPSG 2157) but the Northern Ireland state mapping agency is still serving basemapping in TM65.
There has been previous posts on this issue but the suggested fix has not worked.
I followed the instructions in this post but I could not select EPSG 29902/29903.
The only way we can get the translations to work in a workbench is by not setting the CRS on the Reader or the Writer.
If we set try to set the CRS in the Reader or try to apply a projection using the ESRIReprojector it won't work.