10-D/A 1 mab06he1_10da-200609.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 FORM 10-D/A Amendment No. 1 ASSET-BACKED ISSUER DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the monthly distribution period from: August 26, 2006 to September 25, 2006 Commission File Number of issuing entity: 333-124678-21 MASTR Asset Backed Securities Trust 2006-HE1 (Exact name of issuing entity as specified in its charter) Commission File Number of depositor: 333-124678 Mortgage Asset Securitization Transactions, Inc. (Exact name of depositor as specified in its charter) UBS Real Estate Securities Inc. (Exact name of sponsor as specified in its charter) New York (State or other jurisdiction of incorporation or organization of the issuing entity) 54-2195483 54-2195484 54-2195485 54-2195486 54-2195487 54-2195488 54-2198359 54-6703527 (I.R.S. Employer Identification No.) c/o Wells Fargo Bank, N.A. 9062 Old Annapolis Road Columbia, MD 21045 (Address of principal executive offices of the issuing entity) (Zip Code) (410) 884-2000 (Telephone number, including area code) Not Applicable (Former name, former address, if changed since last report) Registered/reporting pursuant to (check one) Title of Section Section Section Name of Exchange Class 12(b) 12(g) 15(d) (If Section 12(b)) A-1 _____ _____ __X___ ____________ A-2 _____ _____ __X___ ____________ A-3 _____ _____ __X___ ____________ A-4 _____ _____ __X___ ____________ M-1 _____ _____ __X___ ____________ M-2 _____ _____ __X___ ____________ M-3 _____ _____ __X___ ____________ M-4 _____ _____ __X___ ____________ M-5 _____ _____ __X___ ____________ M-6 _____ _____ __X___ ____________ M-7 _____ _____ __X___ ____________ M-8 _____ _____ __X___ ____________ M-9 _____ _____ __X___ ____________ M-10 _____ _____ __X___ ____________ M-11 _____ _____ __X___ ____________ CE _____ _____ __X___ ____________ P _____ _____ __X___ ____________ R _____ _____ __X___ ____________ RX _____ _____ __X___ ____________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes __X__ No ____ Part I - DISTRIBUTION INFORMATION Item 1. Distribution and Pool Performance Information On January 30, 2007, a revision was made to the September 25, 2006 distribution which was made to holders of MASTR Asset Backed Securities Trust 2006-HE1. The reason for the revision is the delinquency stratification and reporting was revised on the distribution statements for 3/25/2006 through 10/25/2006 due to a data mapping error in the monthly processing of the transaction by the Master Servicer, as well as missing loan details and misinterpretation of the Servicer's default file. The revised distribution report is attached as an Exhibit to this Form 10-D/A. Please see Item 9(b), Exhibit 99.1 for the related information. Part II - OTHER INFORMATION Item 9. Exhibits. (a) The following is a list of documents filed as part of this Report on Form 10-D/A: (99.1) Amended monthly report distributed to holders of MASTR Asset Backed Securities Trust 2006-HE1, relating to the September 25, 2006 distribution. (b) The exhibits required to be filed by the Registrant pursuant to this Form are listed above and in the Exhibit Index that immediately follows the signature page hereof. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. MASTR Asset Backed Securities Trust 2006-HE1 (Issuing Entity) Wells Fargo Bank, N.A. (Master Servicer) /s/ Kelly Rentz Kelly Rentz, Officer Date: February 2, 2007 EXHIBIT INDEX Exhibit Number Description EX-99.1 Amended monthly report distributed to holders of MASTR Asset Backed Securities Trust 2006-HE1, relating to the September 25, 2006 distribution. EX-99.1 MASTR Asset Backed Securities Mortgage Pass-Through Certificates Distribution Date: 9/25/2006 MASTR Asset Backed Securities Mortgage Pass-Through Certificates Series 2006-HE1 Contact: Customer Service - CTSLink Wells Fargo Bank, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 www.ctslink.com Telephone: (301) 815-6600 Fax: (301) 815-6660

REO Detail - All Mortgage Loans in REO during Current Period

Foreclosure Detail - All Mortgage Loans in Foreclosure during Current Period

Bankruptcy Detail - All Mortgage Loans in Bankruptcy during Current Period

Prepayment Rates

MASTR ASSET BACKED SECURITIES TRUST 2006-HE1 10-D/A