  Alfv\'en waves are primal and pervasive in space plasmas and significantly
contributes to microscale fluctuations in the solar wind and some heliospheric
processes. Here, we demonstrate the first observable distinct feature of
Alfv\'en wave while propagating from magnetic cloud to trailing solar wind. The
Wal\'en test is used to confirm their presence in selected regions. The
amplitude ratio of inward to outward Alfv\'en waves is employed to establish
their flow direction. The dominant inward flow is observed in magnetic cloud
whereas trailing solar wind shows the dominant outward flow of Alfv\'en waves.
The observed reduction in Wal\'en slope and correlation coefficient within
magnetic cloud suggest (i) the simultaneous presence of an inward & outward
Alfv\'en waves and/or (ii) a possibility of magnetic reconnection and/or (iii)
development of thermal anisotropy and/or (iv) dissipation of Alfv\'enic
fluctuations. The study implies that either the Alfv\'en waves dissipate in the
magnetic cloud or its presence can lead to disruption of the magnetic cloud
structure.
