Second EXP40 missing "type" in config from Endpoint Manager

Created a template for a Yealink T46G with two EXP40 expansion modules.
Added EXP40-1 and EXP40-2 to the extension in Extension Mapping.
Having a look at the config generated in \tftpboot, the first extension modules has correct configs.

expansion_module.1.key.1.type = 13
expansion_module.1.key.1.line = 0
expansion_module.1.key.1.value = 5200
expansion_module.1.key.1.label = Parts

The second expansion module has missing type

expansion_module.2.key.1.type =
expansion_module.2.key.1.line = 0
expansion_module.2.key.1.value = 2635
expansion_module.2.key.1.label = Clayton

I have to manually add "type" value to enable the T46G to install the config.