2 files changed, 9 insertions, 0 deletions
diff --git a/src/iso19111/operation/conversion.cpp b/src/iso19111/operation/conversion.cpp
index 21052a07..39c21439 100644
--- a/src/iso19111/operation/conversion.cpp
+++ b/src/iso19111/operation/conversion.cpp
@@ -3320,6 +3320,9 @@ static bool createPROJ4WebMercator(const Conversion *conv,
     formatter->addParam("k", 1.0);
     formatter->addParam("units", units);
     formatter->addParam("nadgrids", "@null");
+    if (targetProjCRS && targetProjCRS->hasOver()) {
+        formatter->addParam("over");
+    }
     formatter->addParam("wktext");
     formatter->addParam("no_defs");
     return true;
@@ -4095,6 +4098,9 @@ void Conversion::_exportToPROJString(
             formatter->pushOmitZUnitConversion();
             projCRS->addUnitConvertAndAxisSwap(formatter, bAxisSpecFound);
             formatter->popOmitZUnitConversion();
+            if (projCRS->hasOver()) {
+                formatter->addParam("over");
+            }
         }
 
         auto derivedGeographicCRS =
diff --git a/src/iso19111/operation/coordinateoperationfactory.cpp b/src/iso19111/operation/coordinateoperationfactory.cpp
index e13d4071..6b7d4d20 100644
--- a/src/iso19111/operation/coordinateoperationfactory.cpp
+++ b/src/iso19111/operation/coordinateoperationfactory.cpp
@@ -5645,6 +5645,9 @@ namespace crs {
 crs::CRSNNPtr CRS::getResolvedCRS(const crs::CRSNNPtr &crs,
                                   const io::AuthorityFactoryPtr &authFactory,
                                   metadata::ExtentPtr &extentOut) {
+    if (crs->hasOver()) {
+        return crs;
+    }
     const auto &ids = crs->identifiers();
     const auto &name = crs->nameStr();