In 1845, the East India Company offered to confirm Jamaluddin's status in return for support during the forthcoming Sutlej Campaign. Jamaluddin opposed the British at the battles of Mudki and Ferozeshah and in the latter his brother Fatehuddin was killed. Towards the end of the campaign, sensing a British victory, he offered them support at Ferozepur when under attack by the Khalsa Army. For this assistance, in 1848 he was allowed to retain his possessions and awarded the title Nawab. However later accusations of abuse of power and oppression led to an investigation against him, and he was stripped of his powers in 1855. The state of Mamdot subsequently became part of Firozpur district and the title went into abeyance. On the death of Jamaluddin in 1863, the succession of Mamdot was disputed between the sons of Jamaluddin and his younger brother Jalaluddin.