How many ESP32 sdkconfig.* do I need to maintain

This is for a simple project with the platformio.ini below. I see two files sdkconfig.default an sdkconfig.esp32dev.

Do I need to keep both, can I sdkconfig.delete and keep sdkconfig.esp32dev as the config of record? (It says that it’s auto generated so not sure if it is generated during each build or only when I run menuconfig).

Also, at the bottom of vscode/platformio I can select ‘default’ or ‘esp32dev’. Does it matter which one one is selected since my platformio.ini has only one configuraiton?

platform = espressif32
board = esp32dev
framework = espidf
monitor_speed = 115200
board_build.partitions = partitions_singleapp_large.csv