It is the intent of the Legislature that, in developing the plan required by this chapter, counties shall make an effort not to duplicate planning processes that have already occurred within the county, but rather to build upon, and incorporate where appropriate, existing local plans that provide for a collaborative approach to employment services, economic development, and family and children’s services. These shall include, but are not limited to, county GAIN plans developed prior to CalWORKs implementation, county plans developed pursuant to Section 18987.3, economic development plans, employment development plans, and plans intended to guide any other local efforts relevant to CalWORKs implementation.