The reinforcements in the basement look normal. In the TBDY 2007 regulation, reinforcement attachments are made on the supports in the columns. Therefore, the internal forces based on the column reinforced concrete are made based on the lower and upper nodal points of the relevant floor. In the TBDY 2018 regulation, column reinforcements are added in the middle region. For this reason, while the column is being reinforced, the design effects of the lower end of an upper floor and the upper end of the existing floor are taken into account and reinforcement is selected according to the negative design values. The design effects of the 1st basement columns you mentioned are those coming from the lower end of the ground floor. Position of design end forces based on columns according to TBDY 2018: You can observe in the reinforced concrete dialogue/end forces that the design values of the columns you mentioned are the design effects existing at the lower end of an upper floor.