function updateTargetUIReconstructions(mReducedChanges, mUIReconstructions) {
		forEveryMapInMap(mUIReconstructions, (mUIStates, sContainerId, mUIAggregationState, sAggregationName) => {
			const aInitialElementIds = mUIAggregationState[Utils.INITIAL_UI];
			const aTargetElementIds = mUIAggregationState[Utils.TARGET_UI];
			aInitialElementIds.forEach((initialElementId, index) => {
				const mTypes = mReducedChanges[initialElementId];
				if (!mTypes || !ObjectPath.get([Utils.INDEX_RELEVANT, sAggregationName], mTypes)) {
					const sPlaceholder = Utils.PLACEHOLDER + index;
					const iTargetIndex = aTargetElementIds.indexOf(initialElementId);
					if (iTargetIndex >= 0) {
						aTargetElementIds[iTargetIndex] = sPlaceholder;
					}
				}
			});
		});
	}
Iterates through the array of the initial UI element IDs and verifies whether element ID was not affected.
If this is the case, the corresponding element ID will be replaced through the placeholder with its initial index.

@param {Map} mReducedChanges - Map of reduced changes
@param {Map} mUIReconstructions - Map of UI reconstructions