Fix documentation

Signed-off-by: Romain Courtier <[email protected]>

Author: rcourtier

docs/grid_exchange_formats/cgmes/export.md

@@ -357,16 +357,15 @@ If the transformer has a `TapChanger`, the CGMES SSH `step` is written from the
 If the network comes from a CIM-CGMES model and the tap changer has initially a `TapChangerControl`, it always has at export
 too. Otherwise, a `TapChangerControl` is exported for the tap changer if it is considered as defined. A `RatioTapChanger`
 is considered as defined if it has a valid regulation value, a valid target deadband and a non-null regulating terminal.
-A `PhaseTapChanger` is considered as defined if it has a valid regulation value,
-a valid target deadband, and a non-null regulating terminal. By default its regulation mode is set to `CURRENT_LIMITER`.
+A `PhaseTapChanger` is considered as defined if it has a valid regulation value, a valid target deadband, and a non-null regulating terminal.
 
 In a `RatioTapChanger`, the `TapChangerControl` is exported with `RegulatingControl.mode` set to `RegulatingControlModeKind.reactivePower` when
 `RatioTapChanger` `regulationMode` is set to `REACTIVE_POWER`, and with `RegulatingControl.mode` set to `RegulatingControlModeKind.voltage` when
 `RatioTapChanger` `regulationMode` is set to `VOLTAGE`.
 
-In a `PhaseTapChanger`, the `TapChangerControl` is exported with `RegulatingControl.mode` set to `RegulatingControlModeKind.activePower` when
-`PhaseTapChanger` `regulationMode` is set to `ACTIVE_POWER_CONTROL`, and with `RegulatingControl.mode` set to `RegulatingControlModeKind.currentFlow`
-when `PhaseTapChanger` `regulationMode` is set to `CURRENT_LIMITER`.
+In a `PhaseTapChanger`, the `TapChangerControl` is always exported with `RegulatingControl.mode` set to `RegulatingControlModeKind.activePower`.
+If the original `PhaseTapChanger` `regulationMode` is `CURRENT_LIMITER`, the `TapChangerControl` is put off regulation
+and a `OperationalLimitSet` with a `CurrentLimit` is created at the regulated terminal with the regulation value.
 
 (cgmes-two-winding-transformer-export)=
 ### TwoWindingsTransformer