Error- feature table summarize

Hello, please help.
I run Qiime2 using “Moving Pictures” tutorial.
when I did : qiime metadata tabulate --m-input-file MWS-stats-dada2.qza --o-visualization MWS-stats-dada2.qzv. No problems, All the 28 sample are in the file. However, after I run: qiime feature-table summarize --i-table MWS-table-dada2.qza --o-visualization MWS-table-dada2.qzv --m-sample-metadata-file MWH-metadata.tsv
Only, 13 samples remained. My metadata file is like belowing:

#SampleID Group Location
SuL1 Summer Riverside
SuL2 Summer Central
SuL3 Summer Oyster
SuL4 Summer Channel
SuL5 Summer LifePollutionOutlet
SuL6 Summer Mangrove
SuL7 Summer Oceanside
FaL1 Fall Riverside
FaL2 Fall Central
FaL3 Fall Oyster
FaL4 Fall Channel
FaL5 Fall LifePollutionOutlet
FaL6 Fall Mangrove
FaL7 Fall Oceanside
WiL1 Winter Riverside
WiL2 Winter Central
WiL3 Winter Oyster
WiL4 Winter Channel
WiL5 Winter LifePollutionOutlet
WiL6 Winter Mangrove
WiL7 Winter Oceanside
SpL1 Spring Riverside
SpL2 Spring Central
SpL3 Spring Oyster
SpL4 Spring Channel
SpL5 Spring LifePollutionOutlet
SpL6 Spring Mangrove
SpL7 Spring Oceanside

Please help me with this problems.

Hi @NaLi,

The stats file will always show all of the samples, but the last column may be zero, which means it has been dropped from the table. Would you be able to attach the MWS-stats-dada2.qza to your reply and we can take a look?

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