WLED custom mapping defect

Good day. Looking for help with WS2812 mapping. I have 702 pixels on one ESP8266 channel. The first part of the tape (in my case 0-637 or close to it) seems to work correctly, but the rest of the tape ignores the mapping settings.

{“map”:[
0,351,77,428,78,429,155,506,156,507,233,584,234,585,311,662,312,663,
1,352,76,427,79,430,154,505,157,508,232,583,235,586,310,661,313,664,
2,353,75,426,80,431,153,504,158,509,231,582,236,587,309,660,314,665,
3,354,74,425,81,432,152,503,159,510,230,581,237,588,308,659,315,666,
4,355,73,424,82,433,151,502,160,511,229,580,238,589,307,658,316,667,
5,356,72,423,83,434,150,501,161,512,228,579,239,590,306,657,317,668,
6,357,71,422,84,435,149,500,162,513,227,578,240,591,305,656,318,669,
7,358,70,421,85,436,148,499,163,514,226,577,241,592,304,655,319,670,
8,359,69,420,86,437,147,498,164,515,225,576,242,593,303,654,320,671,
9,360,68,419,87,438,146,497,165,516,224,575,243,594,302,653,321,672,
10,361,67,418,88,439,145,496,166,517,223,574,244,595,301,652,322,673,
11,362,66,417,89,440,144,495,167,518,222,573,245,596,300,651,323,674,
12,363,65,416,90,441,143,494,168,519,221,572,246,597,299,650,324,675,
13,364,64,415,91,442,142,493,169,520,220,571,247,598,298,649,325,676,
14,365,63,414,92,443,141,492,170,521,219,570,248,599,297,648,326,677,
15,366,62,413,93,444,140,491,171,522,218,569,249,600,296,647,327,678,
16,367,61,412,94,445,139,490,172,523,217,568,250,601,295,646,328,679,
17,368,60,411,95,446,138,489,173,524,216,567,251,602,294,645,329,680,
18,369,59,410,96,447,137,488,174,525,215,566,252,603,293,644,330,681,
19,370,58,409,97,448,136,487,175,526,214,565,253,604,292,643,331,682,
20,371,57,408,98,449,135,486,176,527,213,564,254,605,291,642,332,683,
21,372,56,407,99,450,134,485,177,528,212,563,255,606,290,641,333,684,
22,373,55,406,100,451,133,484,178,529,211,562,256,607,289,640,334,685,
23,374,54,405,101,452,132,483,179,530,210,561,257,608,288,639,335,686,
24,375,53,404,102,453,131,482,180,531,209,560,258,609,287,638,336,687,
25,376,52,403,103,454,130,481,181,532,208,559,259,610,286,637,337,688,
26,377,51,402,104,455,129,480,182,533,207,558,260,611,285,636,338,689,
27,378,50,401,105,456,128,479,183,534,206,557,261,612,284,635,339,690,
28,379,49,400,106,457,127,478,184,535,205,556,262,613,283,634,340,691,
29,380,48,399,107,458,126,477,185,536,204,555,263,614,282,633,341,692,
30,381,47,398,108,459,125,476,186,537,203,554,264,615,281,632,342,693,
31,382,46,397,109,460,124,475,187,538,202,553,265,616,280,631,343,694,
32,383,45,396,110,461,123,474,188,539,201,552,266,617,279,630,344,695,
33,384,44,395,111,462,122,473,189,540,200,551,267,618,278,629,345,696,
34,385,43,394,112,463,121,472,190,541,199,550,268,619,277,628,346,697,
35,386,42,393,113,464,120,471,191,542,198,549,269,620,276,627,347,698,
36,387,41,392,114,465,119,470,192,543,197,548,270,621,275,626,348,699,
37,388,40,391,115,466,118,469,193,544,196,547,271,622,274,625,349,700,
38,389,39,390,116,467,117,468,194,545,195,546,272,623,273,624,350,701
]}

Without mapping everything works as expected. Also, with the “PEEK” button turned on, you can see how the pixels from the second part are activated at the same time for the mapping settings and the default settings.
Can anyone suggest where I went wrong?