<SEC-DOCUMENT>0000797923-23-000009-index.html : 20230825
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<ACCEPTANCE-DATETIME>20230825121147
ACCESSION NUMBER:		0000797923-23-000009
CONFORMED SUBMISSION TYPE:	485BPOS
PUBLIC DOCUMENT COUNT:		28
FILED AS OF DATE:		20230825
DATE AS OF CHANGE:		20230825
EFFECTIVENESS DATE:		20230901

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BNY Mellon Opportunistic Municipal Securities Fund
		CENTRAL INDEX KEY:			0000797923
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			0430

	FILING VALUES:
		FORM TYPE:		485BPOS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-04764
		FILM NUMBER:		231204855

	BUSINESS ADDRESS:	
		STREET 1:		C/O BNY MELLON INVESTMENT ADVISER, INC.
		STREET 2:		240 GREENWICH STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10286
		BUSINESS PHONE:		2129226400

	MAIL ADDRESS:	
		STREET 1:		C/O BNY MELLON INVESTMENT ADVISER, INC.
		STREET 2:		240 GREENWICH STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10286

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DREYFUS MUNICIPAL BOND OPPORTUNITY FUND
		DATE OF NAME CHANGE:	20081201

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DREYFUS PREMIER MUNICIPAL BOND FUND
		DATE OF NAME CHANGE:	19970605

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PREMIER MUNICIPAL BOND FUND
		DATE OF NAME CHANGE:	19920703

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BNY Mellon Opportunistic Municipal Securities Fund
		CENTRAL INDEX KEY:			0000797923
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			0430

	FILING VALUES:
		FORM TYPE:		485BPOS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	033-07496
		FILM NUMBER:		231204854

	BUSINESS ADDRESS:	
		STREET 1:		C/O BNY MELLON INVESTMENT ADVISER, INC.
		STREET 2:		240 GREENWICH STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10286
		BUSINESS PHONE:		2129226400

	MAIL ADDRESS:	
		STREET 1:		C/O BNY MELLON INVESTMENT ADVISER, INC.
		STREET 2:		240 GREENWICH STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10286

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DREYFUS MUNICIPAL BOND OPPORTUNITY FUND
		DATE OF NAME CHANGE:	20081201

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DREYFUS PREMIER MUNICIPAL BOND FUND
		DATE OF NAME CHANGE:	19970605

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PREMIER MUNICIPAL BOND FUND
		DATE OF NAME CHANGE:	19920703
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<OWNER-CIK>0000797923
<SERIES-ID>S000000090
<SERIES-NAME>BNY Mellon Opportunistic Municipal Securities Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000000131
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>PTEBX
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<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000000133
<CLASS-CONTRACT-NAME>Class C
<CLASS-CONTRACT-TICKER-SYMBOL>DMBCX
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<CLASS-CONTRACT-ID>C000001400
<CLASS-CONTRACT-NAME>Class Z
<CLASS-CONTRACT-TICKER-SYMBOL>DMBZX
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<CLASS-CONTRACT-ID>C000173299
<CLASS-CONTRACT-NAME>Class Y
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<CLASS-CONTRACT-ID>C000173300
<CLASS-CONTRACT-NAME>Class I
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<TYPE>485BPOS
<SEQUENCE>1
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<DESCRIPTION>POST-EFFECTIVE AMENDMENT NO. 67
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Document 24 - RAW XML: ck0000797923-20230821_htm.xml
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