As you can see Conqueror and some Ace ranks will go Platinum I
The rest of the Ace will go to Platinum II
Crown I will go to Platinum III
Crown II and Crown III will go to Platinum IV
Crown IV and Crown V will go to Platinum V
Diamond I and Diamond II will go to Gold I
Diamond III, Diamond IV and Diamond V will go to Gold II
Platinum I, Platinum II and Platinum III will go to Gold III
Gold I, Platinum V and Platinum IV will go to Gold IV
Gold II, Gold III, Gold IV and Gold V will go to Gold V
Platinum I will go to Platinum I
Platinum II will go to Platinum II
Platinum III will go to Platinum III
Platinum IV will go to Platinum IV
Platinum V will go to Platinum V
Bronze I will go to Bronze I
Bronze II will go to Bronze II
Bronze III will go to Bronze III
Bronze IV will go to Bronze IV
Bronze V will go to Bronze V
We can see that a player that reaches Gold V will never go lower than that rank.
For more information check this picture bellow
![](http://techboom.xyz/content/images/2020/04/image.png)
Keep in mind that each server has his own rank, in PUBG mobile right now we have:
North American servers
Europe servers
Asia servers
South American servers
Middle East servers
KRJP servers
And each server has it own rank, so a player can be high rank in North America but low rank in Europe.