Will switching the contract to a subsidiary change the historical social security?

Will not change. As stipulated in the labor contract, as long as it is an on-the-job employee of the unit, the employer must pay social security for it, and switch the contract to a subsidiary, and the social security paid before remains unchanged. Social insurance is a social and economic system that provides income or compensation for those who lose their ability to work, are temporarily unemployed or suffer losses due to health reasons.