Properties files in a Java package not included in DC build

We are developing a Portal Standalone DC and i have a JspDynPage component within it. and i need to do internationalization in it. so as part of that i want to keep multiple resource bundles(properties) so that i could manage my properties files easily, For example
MSS.properties
MSS_es.properties
ESS.properties
LSO.properties
since portal by default has no way to do this bcos it allows only one resourcebundle to specify in portalapp.xml file, i have kept the resource bundles in java package like
com.companyname.portal.resources.
when i export from NWDS with selection of "i want to add non java resources into jar " option from windows->preferences->enterprise portal ->application development studio, it exports all the properties files as part of the par and everything works. but when i do the DC build it ignores all my properties files and it is not working. any suggestions on how to resolve this??? does SAP provide any other way of handling multiple properties files inside a PAR?????

We are using NWDS 2004 SP19. and yes i have defined three default SCs as dependencies. I tested with 2004s NWDS and it seems work fine. I am able to resovle this issue by moving my properties files into another java DC and create public part in java DC and use those public parts in Portal application DC.
So The problem of not including the properties files into Jar seems to be issue only in Portal Application DC not in Java DC. thanks everyone for the quick responses..

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