[5] In August 2001, the IWA made efforts to exploit The Invasion angle being featured in WWF by bringing members of the regular roster and The Alliance such as Mike Awesome, Billy Gunn, Justin Credible, Tajiri, Tommy Dreamer, Hugh Morris, Steve Blackman, Hakú, Scotty 2 Hotty or Shawn Stasiak.

[12] This was a tie in to a legitimate expansion, in which the promotion reached an agreement with Sunshine TV, a network based in Florida, to begin the transmission of an English version of their programming.

[14] After contracting José Huertas González, the IWA used him to promote their Summer Attitude card in Telemundo's programming, including a variety show named Atrevete.

[18] The show was quickly retransmitted in other stations throughout the United States, including WCYB - TV (Bristol, Virginia), KTUD-TV (Las Vegas, Nevada), AIN Cresson (Texas), WBGN-TV (Pittsburgh, Pennsylvania), XCVS-TV (Shreveport, Louisiana), KBBR-TV (Baton Rouge, Louisiana), KBCB-TV (Bellingham, Washington), WRCX-TV (Dayton, Ohio), WVII-TV (Bangor, Maine), WPXT-TV (Portland, Maine), KLDT-TV (Lewisville, Texas), WBQP-TV (Pensacola, Florida), WBII-TV (Ashland, Mississippi), WBGT-TV (Rochester, New York), WYCS-TV (Louisville, Kentucky), WYLE-TV (Sheffield, Alabama), WCOM-TV (Griffin, Georgia), WLOT-TV (New York) and Comcast (Philadelphia, Pennsylvania).

[39] On May 15, 2004, it was announced that “El Café del Milenio”, a television segment that originally aired in WWC's Superestrellas de la Lucha Libre, was being brought to IWA's programming.

[74] The event lead to a series of cross-promotional homages by wrestlers and corporations that knew him, including some that were actively competing with IWA-PR at the moment such as WWC's Rico Suave and several of NWS’ employees.

[85][86][87][88] Foreign wrestlers such as Fidel Sierra, the Youngbloods, Tahitian Warrior, Angel Mexicano, Bret Sanders and Andy Anderson also made public statements.

[96] During the first week of August, IWA and NWS offshoot World Wrestling Stars (WWS) announced an alliance where both promotions would share cards and cooperate on the television product.

[106] In March 2007, WWC and Mario Savoldi broke their working relationship, with the IWA capitalizing by bringing in the agent and Billy Kidman and Psychosis, both of which were announced to perform in their rival's cards.

On June 14, 2007, the IWA joined NWG, WWR and WWS in a card named Junte para la Historia in memorial of deceased wrestler Omar Pérez Barreto.

[131] In an interview with mainstream newspaper Primera Hora, Colón Sr. denied that Big was still champion and warned that they would pursue a case for illegal appropriation if the belt was not immediately returned.

A schism happened within the talents, with Huertas, Los Aéreos, The Naturals, Shane Sewell, Ricky Vega and Toledo siding with Savoldi, most remaining with Pérez and Rivera, and a neutral group led by Ray González and Bison also emerging.

[215] In the lead up to the tenth anniversary event, the IWA booked OBD to a future date despite her scheduled appearance at WWC's Aniversario 2009, airing a promo segment.

[284] Despite this, both sides continued in negotiations and ultimately reached an agreement late in the final week, with Vega appearing in Superestrellas de la Lucha Libre.

[291] The main night of Aniversario, Los Fujitivos wrestled Thunder and Lightning to a no contest in a match were two referees, representing WWC and IWA, counted at the same time.

[292] Afterwards, Savio Vega accompanied by a host of IWA wrestlers including Dennis Rivera, Noel Rodiguez, Spectro, Hiram Tua and Carlos Cotto attacked them.

[303] Despite refusing to return the belts to WWC, when interviewed by mainstream media outlet NotiCel Los Dueños de la Malicia assured that they “had not stolen anything” and were the legitimate champions per the rules of professional wrestling.

On October 12, 2012, former Undisputed World Heavyweight Champion Enrique "Ricky" Cruz denounced that the brand had been appropriated in a message to his followers in Mexico (where he performed for International Wrestling Revolution Group), since a backstory had been created for the "IWA Lightweight Championship" where Exorcista had won it from him.

On November 10, 2011, promoter José E. Mateo launched an independent offshoot named IWA Florida with the approval of Savio Vega, basing it in the city of Orlando in the eponymous American state where a significant portion of the Puerto Rican diaspora is located.

When the World Wrestling League (WWL) shifted its focus from international tours to more home events in 2014, it acquired several locals including Savio Vega and Dennis Rivera.

[317] However, two days after the event owner Richard Negrín announced that the promotion was shutting down as part of a public diatribe, entering a period of inactivity that lasted until June and aborting the angle.

[321] WWL retained its acronym and initially served as a spiritual successor to the IWA, first using flashbacks of his work as General Manager to place him in a similar role as president and then resuming and concluding an unfinished storyline from 2006.

However, the storyline continued with Ferno intending to "destroy" the legacy of the brand after "breaking the man" and grew to include Shane Sewell and Slash Venom, in representation of IWA.

Former Impacto Total/Zona Caliente narrator Axel Cruz was brought in to join WWL's High Voltage team, while the segment El Tocotón also made a comeback led by Stefano.

IWA picked two straight wins over WWL at Summer Blast (later being joined by Jesús Castillo Jr.) and War in the West, with a returning Apolo being approached by Vega and a disappointed Mr. Big by Ferno.

[331] The IWA also reached agreements with several other local promotions (including WWC and Champion Wrestling Association, which had replaced EWO as the largest independent in the scene in the years since) for the use of classic roster talents that had moved on during the hiatus.

[331] To close the book on WWL, Puro Macho was brought in and featured in a confrontation against Vega, Sewell, Apolo and Dennis Rivera over the angle that had been dropped months before.

[335] On February 13, 2020, a video where Ray González extended an invitation to Savio Vega to attend a WWC to present him with a proposal that would be mutually beneficial was posted in the IWA-PR's social media platforms.

[339] In addition, the eventual arrival of MLW World Heavyweight Champion Jacob Fatu and Josef Samael (collectively known as Contra Unit) to IWA-PR was announced prior to the global outbreak, this as part of a collaboration with PCW Ultra.

[350] Throughout 2022, Epico Colón’s Latin American Wrestling Entertainment (LAWE) was IWA-PR’s direct competition, temporarily displacing WWC in ticket sales and successful events.