I digitized a set of polygons in a Map Window that had it's projection set to Popular Visualisation CRS (EPSG 3857). The polygons were mostly snapped to a base layer in the map window which was in a different projection.
When I view the digitized data in a new map window that is using the base layer's projection it is offset by a few meters from the base layer. If I change this new map window's projection to Popular Visualisation CRS the layers are aligned properly. Additionally, if I open both layers in other mapping software they appear misaligned.
Is there some under the hood transform going on here?
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Richard Cantwell
Gamma
DUBLIN 8
Ireland
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