What is the reason for not importing the following sizes due to exceeding the current project scope when importing DXF plates

Question: What is the reason for not importing the following sizes due to exceeding the current project scope when importing DXF plates

For example, if the current project contains five sizes:

XS, S, M (base size), L, XL,

and then you add sizes 170, 175 (base size), 180, 185, 190, 195,

according to the rule of aligning base sizes, 175 aligns with M, 170 aligns with S, 180 aligns with L, and 185 aligns with XL. At this point, 190 and 195 cannot be imported, which will trigger the above prompt.