Regarding carry forward loss in ITR.

if for AY 18-19 assessee was having carry forward long term capital loss & the same had already been declared in the ITR for AY 2018-19. If in AY 19- 20, assessee has not utilised the same, whether it is mandatory to again disclose the carry forward loss of AY 18-19 in the ITR form for AY 19-20 to claim the same in future assessment years?