diff --git a/cd/test/fp1260.txt b/cd/test/fp1260.txt
new file mode 100644
index 000000000..5c6937a68
--- /dev/null
+++ b/cd/test/fp1260.txt
@@ -0,0 +1,4 @@
+sql\fp0\fp0124.sql
+fp0.exe
+
+Rifatta patch per possibile disallineamento
\ No newline at end of file
diff --git a/cd/test/fp1260a.ini b/cd/test/fp1260a.ini
new file mode 100644
index 000000000..1c504248f
--- /dev/null
+++ b/cd/test/fp1260a.ini
@@ -0,0 +1,27 @@
+[Main]
+Demo=0
+
+[fp0]
+File(0) = fp0.exe|X
+Patch = 1260
+Versione = 21511200
+
+[fp1]
+File(24) = sql\fp0\fp0126.sql|X
+Patch = 1260
+Versione = 21511200
+
+[fp99]
+Kill(0) = fppro.msk|x
+
+[fp]
+Data = 19-05-2023
+Descrizione = Fattura Elettronica
+Dischi = 1
+Moduli = cg,ve
+OEM = 
+Patch = 1260
+PostProcess = 
+PreProcess = 
+Versione = 21511200
+
diff --git a/cd/test/fp1260a1.zip b/cd/test/fp1260a1.zip
new file mode 100644
index 000000000..93c4cb607
Binary files /dev/null and b/cd/test/fp1260a1.zip differ
diff --git a/cd/test/fp1262.txt b/cd/test/fp1262.txt
new file mode 100644
index 000000000..e60b62000
--- /dev/null
+++ b/cd/test/fp1262.txt
@@ -0,0 +1,4 @@
+fp0.exe
+
+Aggiunta la logica per la gestione dei fornitori di tipo 4 (ovvero quelli che hanno pił di un codice fornitore associato). 
+Campo ora cicla su tutti i codici cliente/fornitore associati ad una data partita iva e restituisce quello pił grande (quindi l'ultimo inserito ed il pił aggiornato)
diff --git a/cd/test/fp1262a.ini b/cd/test/fp1262a.ini
new file mode 100644
index 000000000..2dfbf2a5a
--- /dev/null
+++ b/cd/test/fp1262a.ini
@@ -0,0 +1,22 @@
+[Main]
+Demo=0
+
+[fp0]
+File(0) = fp0.exe|X
+Patch = 1262
+Versione = 21511200
+
+[fp99]
+Kill(0) = fppro.msk|x
+
+[fp]
+Data = 22-05-2023
+Descrizione = Fattura Elettronica
+Dischi = 1
+Moduli = cg,ve
+OEM = 
+Patch = 1262
+PostProcess = 
+PreProcess = 
+Versione = 21511200
+
diff --git a/cd/test/fp1262a1.zip b/cd/test/fp1262a1.zip
new file mode 100644
index 000000000..76c77198c
Binary files /dev/null and b/cd/test/fp1262a1.zip differ
diff --git a/cd/test/ve1260a1.zip b/cd/test/ve1260a1.zip
index cc63e1c00..36ef54244 100644
Binary files a/cd/test/ve1260a1.zip and b/cd/test/ve1260a1.zip differ
diff --git a/src/fp/fp0400.cpp b/src/fp/fp0400.cpp
index 005610763..33021b9cc 100644
--- a/src/fp/fp0400.cpp
+++ b/src/fp/fp0400.cpp
@@ -100,6 +100,7 @@ protected:
 	static int find_fornitore(TLocalisamfile& clifo);
 	static void add_row_err_forn(int forn_code, TSheet_field& sf_err, TString& denom);
 	void aggiungi_riga(TLocalisamfile& clifo, TSheet_field& sf, TSheet_field& sf_err);
+	int  gestisci_forn_tipo_4(TString paiv);
 	// Aggiunge i protocolli che sono giĆ  presenti per le fatture nel db alla tabellina per il filtro
 	void aggiungi_prot() const;
 	void init() const;
@@ -291,13 +292,13 @@ real TPassive_mask::calcola_importo(vector<iva> riva)
 void TPassive_mask::aggiungi_riga(TLocalisamfile& clifo, TSheet_field& sf, TSheet_field& sf_err)
 {
 	TString					denom = fp_db().sq_get("RAG_SOC");
-	const TString&	paa_codfisc = fp_db().sq_get("COD_FISC");
-	const TString&	paa_piva = fp_db().sq_get("P_IVA");
-	const TString&	paa_codpaese = fp_db().sq_get("COD_PAESE");
-	const TDate&		dataregcont = fp_db().sq_get_date("DATAREGCONT");
-	const TString&	filter_elab = get_fattsel();
-	const bool			is_contab = dataregcont != TDate("20010101");
-	const TString&  id_sdi = fp_db().sq_get("ID_SDI");
+	TString       	paa_codfisc = fp_db().sq_get("COD_FISC");
+	TString					paa_piva = fp_db().sq_get("P_IVA");
+	TString					paa_codpaese = fp_db().sq_get("COD_PAESE");
+	TDate						dataregcont = fp_db().sq_get_date("DATAREGCONT");
+	TString					filter_elab = get_fattsel();
+	bool						is_contab = dataregcont != TDate("20010101");
+	TString					id_sdi = fp_db().sq_get("ID_SDI");
 
 	TToken_string keys("", ';');
 	keys.add(fp_db().sq_get("KEYPROG")); keys.add(fp_db().sq_get("KEYHEAD")); keys.add(fp_db().sq_get("KEYFATT"));
@@ -312,11 +313,8 @@ void TPassive_mask::aggiungi_riga(TLocalisamfile& clifo, TSheet_field& sf, TShee
 		return;
 
 	const bool data_range = dataregcont >= TDate(get(F_DATAINIREG)) && dataregcont <= TDate(get(F_DATAENDREG));
-
-	//INDAGARE QUI IL PROBLEMA DELLA SILE
-
 	if (filter_elab.blank() && forn_code != 0		// Filtro sui non associati
-		|| filter_elab == FILTER_ASS && forn_code == 0 && !is_contab	// Filtro sui associati e non contab.
+		|| filter_elab == FILTER_ASS && (forn_code == 0 || forn_code == -16) && !is_contab	// Filtro sui associati e non contab.
 		|| filter_elab == FILTER_CONT && forn_code == 0 && is_contab && data_range	// Filtro solo contabilizzati e data
 		|| filter_elab == FILTER_ALL)																	// Tutte
 	{
@@ -330,7 +328,7 @@ void TPassive_mask::aggiungi_riga(TLocalisamfile& clifo, TSheet_field& sf, TShee
 
 		if (filter_elab == FILTER_NOASS)
 		{
-			if (forn_code<0)
+			if (forn_code<0 && forn_code != tipo_forn_4)
 			{
 				const int row = sf.set_row_cell(S_ANNO, fp_db().sq_get_int("ANNO"));
 				sf.set_row_cell(S_TIPODOCSDI, tiposdi, row);
@@ -408,6 +406,15 @@ void TPassive_mask::aggiungi_riga(TLocalisamfile& clifo, TSheet_field& sf, TShee
 					sf.set_row_cell(S_FORNITORE, clifo.get(CLI_CODCF), row);
 					sf.set_row_cell(S_RAGSOC, clifo.get(CLI_RAGSOC), row);
 				}
+				else if (forn_code == tipo_forn_4) {
+					int last_codcf = gestisci_forn_tipo_4(paa_piva);
+					if (last_codcf != -1) {
+						sf.set_row_cell(S_FPPRO, true, row);
+						sf.set_row_cell(S_FORNITORE, last_codcf, row);
+						sf.set_row_cell(S_RAGSOC, clifo.get(CLI_RAGSOC), row);
+					}
+
+				}
 				else if (_list_fatt_err.find(denom) == _list_fatt_err.end())
 				{
 					TForn_err& forn_err = _list_fatt_err[denom];
@@ -430,6 +437,30 @@ void TPassive_mask::aggiungi_riga(TLocalisamfile& clifo, TSheet_field& sf, TShee
 	}
 }
 
+int TPassive_mask::gestisci_forn_tipo_4(TString paiv) {
+
+		int last_codcf = -1;
+		int current_codcf = -1;
+
+		TRectype filter(LF_CLIFO);
+
+		TRelation clifo(LF_CLIFO);
+		TRectype& forn = clifo.curr();
+		forn.put(CLI_TIPOCF, "F");
+		TString filtro;
+		filtro << "(PAIV==\"" << paiv << "\")";
+		TCursor cur(&clifo, filtro, 5, &filter, &filter);
+		const long items = cur.items();
+
+		for (cur = 0L; cur.pos() < items; ++cur) {
+			int current_codcf = cur.curr().get_int(CLI_CODCF);
+			if (current_codcf > last_codcf)
+				last_codcf = current_codcf;
+		}
+
+		return last_codcf;
+}
+
 void TPassive_mask::aggiungi_prot() const
 {
 	TSheet_field& sf_prot = sfield(F_PROT);
@@ -534,11 +565,11 @@ void TPassive_mask::auto_assoc()
 
 int TPassive_mask::find_fornitore(TLocalisamfile& clifo)
 {
-  const TString	paa_codfisc		= fp_db().sq_get("COD_FISC");
-	const TString paa_piva			= fp_db().sq_get("P_IVA");
-  const TString paa_codpaese	= fp_db().sq_get("COD_PAESE");
-	const TString	fppro_tipocf	= fp_db().sq_get("TIPO_CF");
-  const TString	fppro_codcf		= fp_db().sq_get("COD_CLIFOR");
+  TString	paa_codfisc		= fp_db().sq_get("COD_FISC");
+	TString paa_piva			= fp_db().sq_get("P_IVA");
+  TString paa_codpaese	= fp_db().sq_get("COD_PAESE");
+	TString	fppro_tipocf	= fp_db().sq_get("TIPO_CF");
+  TString	fppro_codcf		= fp_db().sq_get("COD_CLIFOR");
 
 	// Cerco se il fornitore ĆØ presente in Campo
 	int found_clifo = -1;
@@ -602,8 +633,12 @@ int TPassive_mask::find_fornitore(TLocalisamfile& clifo)
 	}
 
 	// Controllo che non abbia 4 come tipo fornitore
-	found_clifo = found_clifo == found_piva && clifo.get(CLI_ALLEG) == "4" ? tipo_forn_4 : found_clifo;
-	
+
+	 if (found_clifo == found_piva && clifo.get(CLI_ALLEG) == "4")
+		 found_clifo = tipo_forn_4;
+	 else
+		 found_clifo == found_clifo;
+
 	return found_clifo;
 }