Map conversion

[hackie]

I converted a lot of canyon maps today and when loaded on the server I see this in the log :

Code: Select all

[2017/06/05 09:17:25] Map 'OSb8CsxsMazr3APnrpa1Nknz0od' ( Not Too Late.Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.
[2017/06/05 09:17:25] Map 'ES_QMC0MQYJ_kD5BXeQvnV1aEj' ( Drifting or No.Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.
[2017/06/05 09:17:26] Map 'Me1SgtaqIrYQwfSlPRgkFGze7h1' ( the rocks.Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.
[2017/06/05 09:17:26] Map 'Q9oXV5ZWyBZx1W8K_n1nfKvjEHh' ( Gasoline.Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.
[2017/06/05 09:17:27] Map 'XN6EIqenvmVQEdO9AcHPwb0yVfm' ( The Archive..Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.
[2017/06/05 09:17:27] Map 'NDTS9xGG3I8KsgWjhhJ57Sekukd' ( mtc - sequoia.Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.
[2017/06/05 09:18:04] Map 'OSb8CsxsMazr3APnrpa1Nknz0od' ( Not Too Late.Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.
[2017/06/05 09:18:04] Map 'Q9oXV5ZWyBZx1W8K_n1nfKvjEHh' ( Gasoline.Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.
[2017/06/05 09:18:04] Map 'XN6EIqenvmVQEdO9AcHPwb0yVfm' ( The Archive..Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.
[2017/06/05 09:18:04] Map 'NDTS9xGG3I8KsgWjhhJ57Sekukd' ( mtc - sequoia.Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.
[2017/06/05 09:18:04] Map 'ES_QMC0MQYJ_kD5BXeQvnV1aEj' ( Drifting or No.Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.
[2017/06/05 09:18:04] Map 'Me1SgtaqIrYQwfSlPRgkFGze7h1' ( the rocks.Map.Gbx) lightmap need to be recomputed, it will be rejected in a future update.

I converted 450 maps and some of them give me this "error".
What does it mean anyway ?
I just converted them so why already recompute them by a future update ?
What does the server know we do not know ?