What does the text data say?

Question

Law in IT

Please explain (those who know / understand) the meaning of these points.
1. From the date of entry into force, this Agreement terminates any agreements on the subject of this Agreement or similar to it (including the correspondence on its subject prior to the conclusion of this Agreement) that take place between the Parties.
and
2. not assign the right to claim under the Agreement without the written consent of the other Party.

Answer 1

1. What is written in the contract is valid. If you agreed on 5 rubles, and wrote 10 in the contract, then 10. Everything is obvious. Plus, there are nuances about pre-contractual liability (good faith negotiation), but this is not interesting to non-lawyers and non-managers.
2. Assignment is impossible without the consent of the party. In fact, this is a fiction, since under the Civil Code, cession is possible without the consent of the debtor (there are exceptions due to the law and the personality of the creditor, but this is also not interesting for non-specialists). If in Russian - your debt cannot be sold to third parties. In fact, it most likely can.