eventespresso / event-espresso-core

		// and removing the ticket from datetimes it got removed from.

		// first let's add datetimes

		if ( ! empty( $added_datetimes ) && is_array( $added_datetimes ) ) {

			foreach ( $added_datetimes as $row_id ) {

				$row_id = (int) $row_id;

				if ( isset( $saved_datetimes[ $row_id ] ) && $saved_datetimes[ $row_id ] instanceof EE_Datetime ) {

					$ticket->_add_relation_to( $saved_datetimes[ $row_id ], 'Datetime' );

					// Is this an existing ticket (has an ID) and does it have any sold?

					// If so, then we need to add that to the DTT sold because this DTT is getting added.

					if ( $ticket->ID() && $ticket->sold() > 0 ) {

						$saved_datetimes[ $row_id ]->increase_sold( $ticket->sold() );

						$saved_datetimes[ $row_id ]->save();

					}

				}

			}

		}

		// then remove datetimes

		if ( ! empty( $removed_datetimes ) && is_array( $removed_datetimes ) ) {

			foreach ( $removed_datetimes as $row_id ) {

			}

		}

		// then remove datetimes

		if ( ! empty( $removed_datetimes ) && is_array( $removed_datetimes ) ) {

			foreach ( $removed_datetimes as $row_id ) {

				$row_id = (int)$row_id;

				// its entirely possible that a datetime got deleted (instead of just removed from relationship.

				// So make sure we skip over this if the dtt isn't in the $saved_datetimes array)

				if ( isset( $saved_datetimes[ $row_id ] ) && $saved_datetimes[ $row_id ] instanceof EE_Datetime ) {

					$ticket->_remove_relation_to( $saved_datetimes[ $row_id ], 'Datetime' );

					// Is this an existing ticket (has an ID) and does it have any sold?

					// If so, then we need to remove it's sold from the DTT_sold.

					if ( $ticket->ID() && $ticket->sold() > 0 ) {

						$saved_datetimes[ $row_id ]->decrease_sold( $ticket->sold() );

						$saved_datetimes[ $row_id ]->save();

					}

				}

			}

		}

		// cap ticket qty by datetime reg limits

		$ticket->set_qty( min( $ticket->qty(), $ticket->qty( 'reg_limit' ) ) );

		return $ticket;