This is strange in dbml designer Column name and Enttiy Name is different

You know we are writing codes. on the other hand; we are changing DBML files if add or change database table. i droped my tables and added new tables. My DBML does not includ开发者_C百科e new columns names. in My Database ENG_MAINWP_SELECTED_X is not the same as DBML this column ,n my dbml : ENG_MAINWP_SELECTED_X_

Why this strange behavior occurs? So Save method does not run How can i do that? if take column in server explorer and add dbml every thing must be the same...