KOGO-TV (channel 10, now KGTV) in San Diego were retained by McGraw-Hill, along with KLZ-TV, which subsequently changed its call letters to KMGH-TV on the 1st (with the calls reflecting the new ownership), in order to comply with a now-repealed FCC rule in place then that forbade TV and radio stations in the same market, but with different ownership from sharing the same callsigns. The 1990s did not begin well for KMGH; the station saw significant overall financial losses in 1990 and 1991, as well as a decrease in viewership for its local newscasts. A new management team introduced in 1991 turned things around at KMGH; net profit soared 105.5% in 1992 as a result. ABC affiliation Although KMGH had been one of CBS' stronger affiliates, the station would end up disaffiliating from the network due to a series of events that were set in motion as a result of CBS' partnership with the Westinghouse Electric Corporation in July 1994 (and the network's eventual merger with that company in August 1995). As part of the deal, the network moved its programming from its owned-and-operated station in Philadelphia, WCAU-TV (channel 10), to Westinghouse's KYW-TV (channel 3). In a complex ownership deal that was announced in November 1994, CBS traded WCAU to NBC in exchange for two of that network's O&Os (then longtime affiliates)—Denver's KCNC-TV (channel 4) (which had been an O&O since the station's then-owner General Electric purchased NBC in 1986) and Salt Lake City's KUTV (channel 2) (which the network had acquired less than one month earlier). CBS then formed a joint venture with Westinghouse that assumed ownership of KYW-TV, KCNC and KUTV, with Westinghouse serving as majority owner. Group W/CBS and NBC also swapped the transmitter facilities—and by association, channel frequencies—of their respective stations in Miami, WCIX (now WFOR-TV) and WTVJ. At the same time, McGraw-Hill had struck an affiliation agreement with ABC, due partly to the fact that its stations in San Diego and Indianapolis had already been aligned with the network (Bakersfield sister station KERO-TV was also involved in the deal between McGraw-Hill and ABC; however, that station had to wait for its affiliation contract with CBS to expire in March 1996, before it could finally switch to ABC). In keeping with all of this, each of the three major broadcast networks relocated their programming to different stations in the Denver market on September 10, 1995; ABC