Polish tech tree, radio R-123

In the Polish tech tree, the medium tanks CS-59 and CS-63 both have a radio called R-123 with the same specs.

Why can't I use the radio R-123 from the CS-63 on the CS-59?

I cannot find any related information via Google. Also, I didn't hear anything about this in youtube videos about those two tanks that I watched so far.

Update

Meanwhile, I contacted the wargaming support.

My question:

Warum ist das R-123 vom CS-63 nicht verwendbar mit dem CS-59, der auch ein R-123 Funkgerät im Forschungsbaum hat?

In English (translated by Google)

Why is the R-123 from the CS-63 not usable with the CS-59, which also has an R-123 radio in the tech tree?

Their (stupid, sorry, it's stupid) answer:

vielen Dank für die Rückmeldung.

Vielen Dank für das Interesse an unserem Spiel. Leider können die Funkgeräte nicht von einem Tank zum anderen bewegt werden, selbst wenn beide Panzer dasselbe Funkgerät verwenden. Du musst sie zweimal recherchieren und kaufen. Ich hoffe, dass das die Situation klärt.

Bei weiteren Fragen stehen wir gerne jederzeit zur Verfügung!

Ich wünsche dir einen schönen Tag ,

Mit freundlichen Grüßen,

In English:

Thank you for the feedback.

Thank you for your interest in our game. Unfortunately, the radios cannot be moved from one tank to another even if both tanks are using the same radio. You > have to research and buy them twice. I hope that clears up the situation.

If you have any further questions, please do not hesitate to contact us!

I wish you a nice day ,

Best regards,

They don't really read your question and they don't understand their own game.

I suggest to pop this question to Wargaming.net support!

I have myself played WoT for 7 years, but stopped several years ago. In the windows you can see the Compatibility (dependency) of the items, and I expect it to be a hardwired limitation via game database implementation. Having same name for the two items is truly confusing, and in general principles it is to be avoided. My "answer" is I believe it is an in-game bug, and the developers need to apply a fix for this.