Battle of Chamkaur Sahib in 1704 or 1705?

Different writers have written different dates for battle of Chamkaur Sahib. My research makes me inclined towards 1705 but I want to get sangat's view of what year they think and why.

Can you present the sources you have studied?

Bansavalinama Dasan Patshahian - Kesar Singh Chibbar (he mentions Bikrami 1762 which is 1705)

Bhatt Vahian - Every vahi where it is referenced, it is mentioned as Bikrami 1762 which is 1705

Giani Garja Singh's research (again mentioned Bikrami 1762 which is 1705)

In Guru Panth Prakash by Giani Gian Singh it is mentioned Bikrami 1761 which is 1704

Gurpratap Suraj Granth has no date mentioned

Pracheen Panth Prakash by Rattan Singh Bhangu also has 1762 if I remember correctly.

Most other historians have written 1705 as well.

So far I have only seen Giani Gian Singh writing 1704.

Also I tried to use the logic to start from 1700 for the first Anandpur Sahib battle and then adding few months/years as mentioned in history books between various battles and peace period and I came up with 1705 as well but that doesn't mean my research and reasoning is correct so I want to see how others have researched or think as we are all here to learn.